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Benchmark Electronics Inc. – ‘10-Q’ for 6/30/20 – ‘JSON’

On:  Wednesday, 8/5/20, at 5:54pm ET   ·   As of:  8/6/20   ·   For:  6/30/20   ·   Accession #:  863436-20-24   ·   File #:  1-10560

Previous ‘10-Q’:  ‘10-Q’ on 5/8/20 for 3/31/20   ·   Next:  ‘10-Q’ on 11/5/20 for 9/30/20   ·   Latest:  ‘10-Q’ on 5/3/24 for 3/31/24   ·   2 References:   

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  As Of               Filer                 Filing    For·On·As Docs:Size

 8/06/20  Benchmark Electronics Inc.        10-Q        6/30/20   90:11M

Quarterly Report   —   Form 10-Q
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.21M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     35K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     34K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     27K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     27K 
12: R1          Cover                                               HTML     77K 
13: R2          Condensed Consolidated Balance Sheets (Unaudited)   HTML    107K 
14: R3          Condensed Consolidated Balance Sheets (Unaudited)   HTML     44K 
                (Parenthetical)                                                  
15: R4          Condensed Consolidated Statements Of Income (Loss)  HTML     75K 
                (Unaudited)                                                      
16: R5          Condensed Consolidated Statements Of Comprehensive  HTML     45K 
                Income (Loss) (Unaudited)                                        
17: R6          Condensed Consolidated Statements Of Shareholders'  HTML     89K 
                Equity (Unaudited)                                               
18: R7          Condensed Consolidated Statements Of Cash Flows     HTML    110K 
                (Unaudited)                                                      
19: R8          Basis of Presentation                               HTML     30K 
20: R9          New Accounting Pronouncements                       HTML     28K 
21: R10         Contract Assets                                     HTML     37K 
22: R11         Inventories                                         HTML     37K 
23: R12         Goodwill And Other Intangible Assets                HTML     99K 
24: R13         Borrowing Facilities                                HTML     45K 
25: R14         Leases                                              HTML    138K 
26: R15         Common Stock and Stock-Based Awards Plans           HTML    111K 
27: R16         Income Taxes                                        HTML     53K 
28: R17         Revenue                                             HTML    173K 
29: R18         Accounts Receivable Sale Program                    HTML     28K 
30: R19         Contingencies                                       HTML     26K 
31: R20         Restructuring Charges                               HTML    105K 
32: R21         Ransomware Incident                                 HTML     29K 
33: R22         Earnings Per Share                                  HTML     88K 
34: R23         Financial Instruments                               HTML     30K 
35: R24         Accumulated Other Comprehensive Loss                HTML     70K 
36: R25         Segment And Geographic Information                  HTML    225K 
37: R26         Supplemental Cash Flow And Non-Cash Information     HTML     57K 
38: R27         New Accounting Pronouncements (Policies)            HTML     34K 
39: R28         Contract Assets (Tables)                            HTML     36K 
40: R29         Inventories (Tables)                                HTML     38K 
41: R30         Goodwill And Other Intangible Assets (Tables)       HTML    104K 
42: R31         Borrowing Facilities (Tables)                       HTML     40K 
43: R32         Leases (Tables)                                     HTML    138K 
44: R33         Common Stock and Stock-Based Awards Plans (Tables)  HTML    111K 
45: R34         Income Taxes (Tables)                               HTML     51K 
46: R35         Revenue (Tables)                                    HTML    170K 
47: R36         Restructuring Charges (Tables)                      HTML    103K 
48: R37         Earnings Per Share (Tables)                         HTML     86K 
49: R38         Accumulated Other Comprehensive Loss (Tables)       HTML     69K 
50: R39         Segment And Geographic Information (Tables)         HTML    228K 
51: R40         Supplemental Cash Flow and Non-Cash Information     HTML     57K 
                (Tables)                                                         
52: R41         New Accounting Pronouncements (Narrative)           HTML     30K 
                (Details)                                                        
53: R42         Contract Assets (Narrative) (Details)               HTML     26K 
54: R43         Contract Assets (Schedule Of Changes) (Details)     HTML     31K 
55: R44         Inventories (Schedule Of Inventory Costs)           HTML     33K 
                (Details)                                                        
56: R45         Goodwill And Other Intangible Assets (Narrative)    HTML     33K 
                (Details)                                                        
57: R46         Goodwill and Other Intangible Assets (Schedule of   HTML     30K 
                Goodwill by Reportable Segments) (Details)                       
58: R47         Goodwill And Other Intangible Assets (Schedule Of   HTML     45K 
                Other Intangible Assets) (Details)                               
59: R48         Goodwill And Other Intangible Assets (Schedule Of   HTML     35K 
                Amortization Expense) (Details)                                  
60: R49         Goodwill And Other Intangible Assets (Schedule Of   HTML     36K 
                Estimated Future Amortization Expense) (Details)                 
61: R50         Borrowing Facilities - Long-term debt outstanding   HTML     36K 
                (Details)                                                        
62: R51         Borrowing Facilities (Narrative) (Details)          HTML     90K 
63: R52         Leases - Components of lease expense, and lease     HTML     86K 
                assets and liabilities (Details)                                 
64: R53         Leases - Future annual minimum lease payments and   HTML     54K 
                finance lease commitments (Details)                              
65: R54         Leases - Future annual minimum lease payments and   HTML     38K 
                finance lease commitments - Present value of lease               
                liabilities (Details)                                            
66: R55         Leases (Narrative) (Details)                        HTML     28K 
67: R56         Common Stock and Stock-Based Awards Plans -         HTML     43K 
                Dividends and Share Repurchase Authorization                     
                (Narrative) (Details)                                            
68: R57         Common Stock and Stock-Based Awards Plans           HTML     33K 
                (Schedule Of Unrecognized Compensation Cost And                  
                Remaining Weighted-Average Amortization Period)                  
                (Details)                                                        
69: R58         Common Stock and Stock-Based Awards Plans (Summary  HTML     40K 
                Of Stock Options) (Details)                                      
70: R59         Common Stock and Stock-Based Awards Plans -         HTML     57K 
                Stock-Based Compensation (Narrative) (Details)                   
71: R60         Common Stock and Stock-Based Awards Plans (Summary  HTML     52K 
                Of Stock-Based Awards) (Details)                                 
72: R61         Income Taxes (Narrative) (Details)                  HTML     40K 
73: R62         Income Taxes (Schedule Of Income Tax Expense        HTML     38K 
                (Benefit)) (Details)                                             
74: R63         Income Taxes (Schedule Of Tax Incentives)           HTML     28K 
                (Details)                                                        
75: R64         Revenue (Disaggregation of revenue) (Details)       HTML     86K 
76: R65         Revenue (Narrative) (Details)                       HTML     28K 
77: R66         Accounts Receivable Sale Program (Narrative)        HTML     30K 
                (Details)                                                        
78: R67         Restructuring Charges (Narrative) (Details)         HTML     29K 
79: R68         Restructuring Charges (Schedule Of Accrued          HTML     61K 
                Restructuring Balances) (Details)                                
80: R69         Ransomware incident (Narrative) (Details)           HTML     28K 
81: R70         Earnings Per Share (Details)                        HTML     52K 
82: R71         Financial Instruments (Narrative) (Details)         HTML     56K 
83: R72         Accumulated Other Comprehensive Loss (Schedule Of   HTML     50K 
                Accumulated Other Comprehensive Loss By Component)               
                (Details)                                                        
84: R73         Segment And Geographic Information (Operating       HTML     70K 
                Segments) (Details)                                              
85: R74         Segment And Geographic Information (Schedule Of     HTML     44K 
                Geographic Net Sales And Long-Lived Assets)                      
                (Details)                                                        
86: R75         Supplemental Cash Flow and Non-Cash Information     HTML     34K 
                (Table Of Supplmental Cash Flow Information)                     
                (Details)                                                        
88: XML         IDEA XML File -- Filing Summary                      XML    166K 
11: XML         XBRL Instance -- bhe202010q2_htm                     XML   3.43M 
87: EXCEL       IDEA Workbook of Financial Reports                  XLSX    100K 
 7: EX-101.CAL  Inline XBRL Taxonomy Extension Calculation           XML    210K 
                Linkbase Document -- bhe-20200630_cal                            
 8: EX-101.DEF  Inline XBRL Taxonomy Extension Definition Linkbase   XML    559K 
                Document -- bhe-20200630_def                                     
 9: EX-101.LAB  Inline XBRL Taxonomy Extension Label Linkbase        XML   1.79M 
                Document -- bhe-20200630_lab                                     
10: EX-101.PRE  Inline XBRL Taxonomy Extension Presentation          XML   1.08M 
                Linkbase Document -- bhe-20200630_pre                            
 6: EX-101.SCH  Inline XBRL Taxonomy Extension Schema Document --    XSD    141K 
                bhe-20200630                                                     
89: JSON        XBRL Instance as JSON Data -- MetaLinks              355±   526K 
90: ZIP         XBRL Zipped Folder -- 0000863436-20-000024-xbrl      Zip    236K

‘JSON’   —   XBRL Instance as JSON Data — MetaLinks

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                            "documentation":  "Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met.  Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.",
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                            }
                        }
                    },
                "localname":  "RestrictedSharesAndRestrictedStockUnitsMember",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/EarningsPerShareDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "bhe_RestructuringChargesAndOtherCosts":  {
                "auth_ref":  [
                    ],
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                    "http://bench.com/role/CondensedConsolidatedStatementsOfIncomeLossunaudited":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_OperatingIncomeLoss",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Restructuring charges and other costs, including integration and proxy contest",
                            "label":  "Restructuring charges and other costs",
                            "terseLabel":  "Restructuring charges and other costs"
                            }
                        }
                    },
                "localname":  "RestructuringChargesAndOtherCosts",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfIncomeLossunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "bhe_Semi-CapSectorMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Sector of the economy consisting of companies engaged semiconductor capital equipment business activities.",
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                            }
                        }
                    },
                "localname":  "Semi-CapSectorMember",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "bhe_TelecommunicationsSectorMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Sector of the economy consisting of companies engaged in next-generation telecommunications business activities.",
                            "label":  "Telecommunications Sector [Member]"
                            }
                        }
                    },
                "localname":  "TelecommunicationsSectorMember",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "bhe_TermLoanFacilityMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Term Loan Facility [Member]",
                            "terseLabel":  "Term loan, due 2023 [Member]"
                            }
                        }
                    },
                "localname":  "TermLoanFacilityMember",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/BorrowingFacilitiesLongtermDebtOutstandingDetails",
                    "http://bench.com/role/BorrowingFacilitiesNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "bhe_TradeAccountsReceivableSold":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the amount of trade accounts receivable that have been sold to a third party.",
                            "label":  "Trade Accounts Receivable Sold"
                            }
                        }
                    },
                "localname":  "TradeAccountsReceivableSold",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/AccountsReceivableSaleProgramNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "bhe_TwoThousandAndNineteenMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Restructuring activities that started in 2019",
                            "label":  "Two Thousand And Nineeen [Member]",
                            "terseLabel":  "2019 [Member]"
                            }
                        }
                    },
                "localname":  "TwoThousandAndNineteenMember",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/RestructuringChargesScheduleOfAccruedRestructuringBalancesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "bhe_TwoThousandAndTwentyMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Restructuring activities that started in 2020",
                            "label":  "Two Thousand And Twenty [Member]",
                            "terseLabel":  "2020 [Member]"
                            }
                        }
                    },
                "localname":  "TwoThousandAndTwentyMember",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/RestructuringChargesScheduleOfAccruedRestructuringBalancesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "bhe_UnrecognizedTaxBenefitsIncludingInterestAndPenalties":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Unrecognized tax benefits including interest and penalties.",
                            "label":  "Unrecognized Tax Benefits Including Interest And Penalties",
                            "terseLabel":  "Unrecognized tax benefits including interest and penalties",
                            "verboseLabel":  "Unrecognized tax reserve"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsIncludingInterestAndPenalties",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "bhe_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpenseReductionsResultingFromLapseOfApplicableStatuteOfLimitations":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Unrecognized Tax Benefits Income Tax Penalties And Interest Expense Reductions Resulting From Lapse Of Applicable Statute Of Limitations",
                            "label":  "Unrecognized Tax Benefits Income Tax Penalties And Interest Expense Reductions Resulting From Lapse Of Applicable Statute Of Limitations",
                            "terseLabel":  "Decrease in unrecognized tax benefits reserve including penalties and interest due to expiration of statute of limitations"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpenseReductionsResultingFromLapseOfApplicableStatuteOfLimitations",
                "nsuri":  "http://bench.com/20200630",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "country_CN":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "C [N]",
                            "terseLabel":  "China [Member]"
                            }
                        }
                    },
                "localname":  "CN",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails",
                    "http://bench.com/role/IncomeTaxesScheduleOfTaxIncentivesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_MY":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "M [Y]",
                            "terseLabel":  "Malaysia [Member}"
                            }
                        }
                    },
                "localname":  "MY",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails",
                    "http://bench.com/role/IncomeTaxesScheduleOfTaxIncentivesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_SG":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "SG",
                            "terseLabel":  "Singapore [Member]"
                            }
                        }
                    },
                "localname":  "SG",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://bench.com/role/SegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_TH":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "T [H]",
                            "terseLabel":  "Thailand [Member]"
                            }
                        }
                    },
                "localname":  "TH",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails",
                    "http://bench.com/role/IncomeTaxesScheduleOfTaxIncentivesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_US":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "U (S)",
                            "terseLabel":  "United States [Member]",
                            "verboseLabel":  "U.S."
                            }
                        }
                    },
                "localname":  "US",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://bench.com/role/SegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "dei_AmendmentFlag":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
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                            }
                        }
                    },
                "localname":  "AmendmentFlag",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_CityAreaCode":  {
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                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Area code of city",
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                            }
                        }
                    },
                "localname":  "CityAreaCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_CoverAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Cover page.",
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                            }
                        }
                    },
                "localname":  "CoverAbstract",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "dei_CurrentFiscalYearEndDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "End date of current fiscal year in the format --MM-DD.",
                            "label":  "Current Fiscal Year End Date"
                            }
                        }
                    },
                "localname":  "CurrentFiscalYearEndDate",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "gMonthDayItemType"
                },
            "dei_DocumentFiscalPeriodFocus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Fiscal period values are FY, Q1, Q2, and Q3.  1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.",
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                            }
                        }
                    },
                "localname":  "DocumentFiscalPeriodFocus",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "fiscalPeriodItemType"
                },
            "dei_DocumentFiscalYearFocus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "This is focus fiscal year of the document report in CCYY format.  For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus.  Example: 2006.",
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                            }
                        }
                    },
                "localname":  "DocumentFiscalYearFocus",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "gYearItemType"
                },
            "dei_DocumentPeriodEndDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The end date of the period reflected on the cover page if a periodic report.  For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date.  The format of the date is CCYY-MM-DD.",
                            "label":  "Document Period End Date"
                            }
                        }
                    },
                "localname":  "DocumentPeriodEndDate",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "dateItemType"
                },
            "dei_DocumentQuarterlyReport":  {
                "auth_ref":  [
                    "r366"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true only for a form used as an quarterly report.",
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                            }
                        }
                    },
                "localname":  "DocumentQuarterlyReport",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_DocumentTransitionReport":  {
                "auth_ref":  [
                    "r367"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true only for a form used as a transition report.",
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                            }
                        }
                    },
                "localname":  "DocumentTransitionReport",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_DocumentType":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc).  The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
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                            }
                        }
                    },
                "localname":  "DocumentType",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "submissionTypeItemType"
                },
            "dei_EntityAddressAddressLine1":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Address Line 1 such as Attn, Building Name, Street Name",
                            "label":  "Entity Address, Address Line One"
                            }
                        }
                    },
                "localname":  "EntityAddressAddressLine1",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressCityOrTown":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of the City or Town",
                            "label":  "Entity Address, City or Town"
                            }
                        }
                    },
                "localname":  "EntityAddressCityOrTown",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressPostalZipCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Code for the postal or zip code",
                            "label":  "Entity Address, Postal Zip Code"
                            }
                        }
                    },
                "localname":  "EntityAddressPostalZipCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressStateOrProvince":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of the state or province.",
                            "label":  "Entity Address, State or Province"
                            }
                        }
                    },
                "localname":  "EntityAddressStateOrProvince",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "stateOrProvinceItemType"
                },
            "dei_EntityCentralIndexKey":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC.  It is commonly abbreviated as CIK.",
                            "label":  "Entity Central Index Key"
                            }
                        }
                    },
                "localname":  "EntityCentralIndexKey",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "centralIndexKeyItemType"
                },
            "dei_EntityCommonStockSharesOutstanding":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report.  Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.",
                            "label":  "Entity Common Stock, Shares Outstanding"
                            }
                        }
                    },
                "localname":  "EntityCommonStockSharesOutstanding",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "dei_EntityCurrentReportingStatus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days.  This information should be based on the registrant's current or most recent filing containing the related disclosure.",
                            "label":  "Entity Current Reporting Status"
                            }
                        }
                    },
                "localname":  "EntityCurrentReportingStatus",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_EntityEmergingGrowthCompany":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicate if registrant meets the emerging growth company criteria.",
                            "label":  "Entity Emerging Growth Company"
                            }
                        }
                    },
                "localname":  "EntityEmergingGrowthCompany",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntityFileNumber":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Commission file number.  The field allows up to 17 characters.  The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
                            "label":  "Entity File Number"
                            }
                        }
                    },
                "localname":  "EntityFileNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "fileNumberItemType"
                },
            "dei_EntityFilerCategory":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicate whether the registrant is one of the following:  Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer.  Definitions of these categories are stated in Rule 12b-2 of the Exchange Act.  This information should be based on the registrant's current or most recent filing containing the related disclosure.",
                            "label":  "Entity Filer Category"
                            }
                        }
                    },
                "localname":  "EntityFilerCategory",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "filerCategoryItemType"
                },
            "dei_EntityIncorporationStateCountryCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Two-character EDGAR code representing the state or country of incorporation.",
                            "label":  "Entity Incorporation, State or Country Code"
                            }
                        }
                    },
                "localname":  "EntityIncorporationStateCountryCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "edgarStateCountryItemType"
                },
            "dei_EntityInteractiveDataCurrent":  {
                "auth_ref":  [
                    "r369"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).",
                            "label":  "Entity Interactive Data Current"
                            }
                        }
                    },
                "localname":  "EntityInteractiveDataCurrent",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_EntityRegistrantName":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
                            "label":  "Entity Registrant Name"
                            }
                        }
                    },
                "localname":  "EntityRegistrantName",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityShellCompany":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.",
                            "label":  "Entity Shell Company"
                            }
                        }
                    },
                "localname":  "EntityShellCompany",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntitySmallBusiness":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicates that the company is a Smaller Reporting Company (SRC).",
                            "label":  "Entity Small Business"
                            }
                        }
                    },
                "localname":  "EntitySmallBusiness",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntityTaxIdentificationNumber":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
                            "label":  "Entity Tax Identification Number"
                            }
                        }
                    },
                "localname":  "EntityTaxIdentificationNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "employerIdItemType"
                },
            "dei_LocalPhoneNumber":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Local phone number for entity.",
                            "label":  "Local Phone Number"
                            }
                        }
                    },
                "localname":  "LocalPhoneNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_Security12bTitle":  {
                "auth_ref":  [
                    "r364"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Title of a 12(b) registered security.",
                            "label":  "Title of 12(b) Security"
                            }
                        }
                    },
                "localname":  "Security12bTitle",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "securityTitleItemType"
                },
            "dei_SecurityExchangeName":  {
                "auth_ref":  [
                    "r365"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of the Exchange on which a security is registered.",
                            "label":  "Security Exchange Name"
                            }
                        }
                    },
                "localname":  "SecurityExchangeName",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "edgarExchangeCodeItemType"
                },
            "dei_TradingSymbol":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Trading symbol of an instrument as listed on an exchange.",
                            "label":  "Trading Symbol"
                            }
                        }
                    },
                "localname":  "TradingSymbol",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Cover"
                    ],
                "xbrltype":  "tradingSymbolItemType"
                },
            "srt_AmericasMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Americas [Member]",
                            "terseLabel":  "Americas [Member]"
                            }
                        }
                    },
                "localname":  "AmericasMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillByReportableSegmentsDetails",
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_AsiaMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Asia [Member]",
                            "terseLabel":  "Asia [Member]"
                            }
                        }
                    },
                "localname":  "AsiaMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillByReportableSegmentsDetails",
                    "http://bench.com/role/RestructuringChargesNarrativeDetails",
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_ConsolidationItemsAxis":  {
                "auth_ref":  [
                    "r128",
                    "r137"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Consolidation Items [Axis]"
                            }
                        }
                    },
                "localname":  "ConsolidationItemsAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_ConsolidationItemsDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Consolidation Items [Domain]"
                            }
                        }
                    },
                "localname":  "ConsolidationItemsDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_EuropeMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Europe [Member]",
                            "terseLabel":  "Europe [Member]"
                            }
                        }
                    },
                "localname":  "EuropeMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_MaximumMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Maximum [Member]",
                            "terseLabel":  "Maximum [Member]"
                            }
                        }
                    },
                "localname":  "MaximumMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/BorrowingFacilitiesNarrativeDetails",
                    "http://bench.com/role/GoodwillAndOtherIntangibleAssetsNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_MinimumMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Minimum [Member]",
                            "terseLabel":  "Minimum [Member]"
                            }
                        }
                    },
                "localname":  "MinimumMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/BorrowingFacilitiesNarrativeDetails",
                    "http://bench.com/role/GoodwillAndOtherIntangibleAssetsNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_RangeAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Range [Axis]"
                            }
                        }
                    },
                "localname":  "RangeAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/BorrowingFacilitiesNarrativeDetails",
                    "http://bench.com/role/GoodwillAndOtherIntangibleAssetsNarrativeDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_RangeMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Range [Member]",
                            "terseLabel":  "Range [Domain]"
                            }
                        }
                    },
                "localname":  "RangeMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/BorrowingFacilitiesNarrativeDetails",
                    "http://bench.com/role/GoodwillAndOtherIntangibleAssetsNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_ReserveQuantitiesByTypeOfReserveAxis":  {
                "auth_ref":  [
                    "r329"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Reserve Quantities by Type of Reserve [Axis]"
                            }
                        }
                    },
                "localname":  "ReserveQuantitiesByTypeOfReserveAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RestructuringChargesScheduleOfAccruedRestructuringBalancesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_SegmentGeographicalDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Segment Geographical [Domain]",
                            "terseLabel":  "Segment, Geographical [Domain]"
                            }
                        }
                    },
                "localname":  "SegmentGeographicalDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails",
                    "http://bench.com/role/IncomeTaxesScheduleOfTaxIncentivesDetails",
                    "http://bench.com/role/RestructuringChargesNarrativeDetails",
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_StatementGeographicalAxis":  {
                "auth_ref":  [
                    "r140",
                    "r219",
                    "r221",
                    "r357",
                    "r360",
                    "r361"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Statement Geographical [Axis]",
                            "terseLabel":  "Statement, Geographical [Axis]"
                            }
                        }
                    },
                "localname":  "StatementGeographicalAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/IncomeTaxesNarrativeDetails",
                    "http://bench.com/role/IncomeTaxesScheduleOfTaxIncentivesDetails",
                    "http://bench.com/role/RestructuringChargesNarrativeDetails",
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_TypeOfReserveDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Type Of Reserve [Domain]",
                            "terseLabel":  "Type of Reserve [Domain]"
                            }
                        }
                    },
                "localname":  "TypeOfReserveDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RestructuringChargesScheduleOfAccruedRestructuringBalancesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AcceleratedShareRepurchasesSettlementPaymentOrReceipt":  {
                "auth_ref":  [
                    "r211"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
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                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.",
                            "label":  "Accounts receivable",
                            "negatedLabel":  "Accounts receivable",
                            "terseLabel":  "Accounts receivable"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccountsReceivable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  19.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.",
                            "label":  "Increase Decrease In Accrued Income Taxes Payable",
                            "terseLabel":  "Income taxes",
                            "totalLabel":  "Income taxes"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccruedIncomeTaxesPayable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccruedLiabilities":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  17.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.",
                            "label":  "Accrued liabilities",
                            "totalLabel":  "Increase (Decrease) in Accrued Liabilities, Total"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccruedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInContractWithCustomerAsset":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  13.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.",
                            "label":  "Increase Decrease In Contract Receivables Net",
                            "negatedLabel":  "Contract assets"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInContractWithCustomerAsset",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInInventories":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  14.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.",
                            "label":  "Increase Decrease In Inventories",
                            "negatedLabel":  "Inventories",
                            "terseLabel":  "Inventories",
                            "totalLabel":  "Increase (Decrease) in Inventories, Total"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInInventories",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInLeasingReceivables":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  18.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the amount due from lessees arising from lease agreements.",
                            "label":  "Increase (Decrease) in Leasing Receivables",
                            "negatedLabel":  "Operating leases"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInLeasingReceivables",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  15.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in prepaid expenses, and assets classified as other.",
                            "label":  "Prepaid expenses and other assets Calc",
                            "negatedLabel":  "Prepaid expenses and other assets",
                            "terseLabel":  "Prepaid expenses and other assets",
                            "totalLabel":  "Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Increase (Decrease) in Stockholders' Equity [Roll Forward]"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInStockholdersEquityRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfShareholdersEquityunaudited"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements":  {
                "auth_ref":  [
                    "r117",
                    "r122"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.",
                            "label":  "Incremental Common Shares Attributable To Share Based Payment Arrangements",
                            "terseLabel":  "Incremental common shares attributable to stock-based awards",
                            "verboseLabel":  "Incremental common shares attributable to exercise of dilutive options"
                            }
                        }
                    },
                "localname":  "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/EarningsPerShareDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_InsuranceRecoveries":  {
                "auth_ref":  [
                    "r74"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount recovered from insurance.  These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.",
                            "label":  "Insurance recoveries"
                            }
                        }
                    },
                "localname":  "InsuranceRecoveries",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RansomwareIncidentNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestExpense":  {
                "auth_ref":  [
                    "r65",
                    "r130",
                    "r299",
                    "r302",
                    "r339"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfIncomeLossunaudited":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of the cost of borrowed funds accounted for as interest expense.",
                            "label":  "Interest expense",
                            "negatedLabel":  "Interest expense",
                            "totalLabel":  "Interest Expense, Total"
                            }
                        }
                    },
                "localname":  "InterestExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfIncomeLossunaudited",
                    "http://bench.com/role/FinancialInstrumentsNarrativeDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestPaidNet":  {
                "auth_ref":  [
                    "r88",
                    "r91",
                    "r97"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity.  Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
                            "label":  "Interest Paid, Net",
                            "terseLabel":  "Interest paid",
                            "totalLabel":  "Interest Paid, Net, Total"
                            }
                        }
                    },
                "localname":  "InterestPaidNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/SupplementalCashFlowAndNonCashInformationTableOfSupplmentalCashFlowInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestRateCashFlowHedgeAssetAtFairValue":  {
                "auth_ref":  [
                    "r290"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments.",
                            "label":  "Interest Rate Cash Flow Hedge Asset At Fair Value",
                            "terseLabel":  "Fair value of interest rate swap"
                            }
                        }
                    },
                "localname":  "InterestRateCashFlowHedgeAssetAtFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/FinancialInstrumentsNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue":  {
                "auth_ref":  [
                    "r290"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.",
                            "label":  "Interest Rate Cash Flow Hedge Liability At Fair Value",
                            "terseLabel":  "Fair value of interest rate swap"
                            }
                        }
                    },
                "localname":  "InterestRateCashFlowHedgeLiabilityAtFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/FinancialInstrumentsNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestRateSwapMember":  {
                "auth_ref":  [
                    "r292"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period.",
                            "label":  "Interest Rate Swap [Member]"
                            }
                        }
                    },
                "localname":  "InterestRateSwapMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/BorrowingFacilitiesNarrativeDetails",
                    "http://bench.com/role/FinancialInstrumentsNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_IntersegmentEliminationMember":  {
                "auth_ref":  [
                    "r135"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Eliminating entries used in operating segment consolidation.",
                            "label":  "Elimination Of Intersegment Sales [Member]",
                            "terseLabel":  "Elimination Of Intersegment Sales [Member]"
                            }
                        }
                    },
                "localname":  "IntersegmentEliminationMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/RevenueDisaggregationOfRevenueDetails",
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_InventoryDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Inventories [Abstract]"
                            }
                        }
                    },
                "localname":  "InventoryDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_InventoryDisclosureTextBlock":  {
                "auth_ref":  [
                    "r164"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for inventory.  Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.",
                            "label":  "Inventories [Text Block]",
                            "terseLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "InventoryDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/Inventories"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_InventoryFinishedGoods":  {
                "auth_ref":  [
                    "r44"
                    ],
                "calculation":  {
                    "http://bench.com/role/InventoriesScheduleOfInventoryCostsDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_InventoryNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.",
                            "label":  "Inventory, Finished Goods",
                            "terseLabel":  "Finished goods",
                            "totalLabel":  "Inventory, Finished Goods, Total"
                            }
                        }
                    },
                "localname":  "InventoryFinishedGoods",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/InventoriesScheduleOfInventoryCostsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InventoryNet":  {
                "auth_ref":  [
                    "r3",
                    "r47",
                    "r163"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedBalanceSheetsunaudited":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        },
                    "http://bench.com/role/InventoriesScheduleOfInventoryCostsDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.",
                            "label":  "Inventories, net",
                            "terseLabel":  "Inventories",
                            "totalLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "InventoryNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedBalanceSheetsunaudited",
                    "http://bench.com/role/InventoriesScheduleOfInventoryCostsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InventoryRawMaterials":  {
                "auth_ref":  [
                    "r46"
                    ],
                "calculation":  {
                    "http://bench.com/role/InventoriesScheduleOfInventoryCostsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_InventoryNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.",
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                            "documentation":  "Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.",
                            "label":  "Payments Related To Tax Withholding For Share Based Compensation",
                            "negatedLabel":  "Employee taxes paid for shares withheld"
                            }
                        }
                    },
                "localname":  "PaymentsRelatedToTaxWithholdingForShareBasedCompensation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireProductiveAssets":  {
                "auth_ref":  [
                    "r82"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.",
                            "label":  "Payments to Acquire Productive Assets",
                            "totalLabel":  "Payments to Acquire Productive Assets, Total",
                            "verboseLabel":  "Capital expenditures"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireProductiveAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/SegmentAndGeographicInformationOperatingSegmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r82"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  23.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
                            "label":  "Additions to property, plant and equipment",
                            "negatedLabel":  "Additions to property, plant and equipment",
                            "totalLabel":  "Payments to Acquire Property, Plant, and Equipment, Total"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquirePropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PerformanceSharesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Share-based payment arrangement awarded for meeting performance target.",
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                            "terseLabel":  "Performance-Based Restricted Stock Units [Member]"
                            }
                        }
                    },
                "localname":  "PerformanceSharesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CommonStockAndStockBasedAwardsPlansScheduleOfUnrecognizedCompensationCostAndRemainingWeightedAverageAmortizationPeriodDetails",
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                "xbrltype":  "domainItemType"
                },
            "us-gaap_PreferredStockParOrStatedValuePerShare":  {
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                    "r16"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.",
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                            }
                        }
                    },
                "localname":  "PreferredStockParOrStatedValuePerShare",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_PreferredStockSharesAuthorized":  {
                "auth_ref":  [
                    "r16"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.",
                            "label":  "Preferred shares, shares authorized"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesAuthorized",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                },
            "us-gaap_PreferredStockSharesIssued":  {
                "auth_ref":  [
                    "r16"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury).  May be all or portion of the number of preferred shares authorized.  Excludes preferred shares that are classified as debt.",
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                            "terseLabel":  "Preferred shares, issued"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesIssued",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://bench.com/role/CondensedConsolidatedBalanceSheetsunauditedParenthetical"
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                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PreferredStockValue":  {
                "auth_ref":  [
                    "r16"
                    ],
                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedBalanceSheetsunaudited":  {
                        "order":  29.0,
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                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer).  This item includes treasury stock repurchased by the entity.  Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.",
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                            "periodEndLabel":  "Preferred Stock, Value, Issued, Ending Balance",
                            "periodStartLabel":  "Preferred Stock, Value, Issued, Beginning Balance",
                            "terseLabel":  "Preferred stock, $0.10 par value; 5,000 shares authorized, none issued",
                            "totalLabel":  "Preferred Stock, Value, Issued, Total"
                            }
                        }
                    },
                "localname":  "PreferredStockValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
                },
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                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.",
                            "label":  "Prepaid Expense and Other Assets",
                            "terseLabel":  "Prepaid expenses and other current assets",
                            "totalLabel":  "Prepaid Expense and Other Assets, Total"
                            }
                        }
                    },
                "localname":  "PrepaidExpenseAndOtherAssetsCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromDivestitureOfBusinesses":  {
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                "calculation":  {
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                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.",
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                            "totalLabel":  "Cash received from business divestitures",
                            "verboseLabel":  "Cash received from business divestitures"
                            }
                        }
                    },
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                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                },
            "us-gaap_ProceedsFromIssuanceOfMediumTermNotes":  {
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                    ],
                "calculation":  {
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                        "order":  33.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash inflow from a debt funding received on a regular basis with maturities ranging from 5-10 years.",
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                            "terseLabel":  "Borrowings under credit agreement"
                            }
                        }
                    },
                "localname":  "ProceedsFromIssuanceOfMediumTermNotes",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions":  {
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                    "r84",
                    "r254"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow from issuance of shares under share-based payment arrangement.  Includes, but is not limited to, option exercised.",
                            "label":  "Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options",
                            "terseLabel":  "Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options, Total",
                            "totalLabel":  "Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options, Total",
                            "verboseLabel":  "Total cash received as a result of stock option exercises"
                            }
                        }
                    },
                "localname":  "ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities":  {
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                "calculation":  {
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                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.",
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                            "terseLabel":  "Proceeds from sales of investments at par",
                            "totalLabel":  "Proceeds from Sale and Maturity of Marketable Securities, Total"
                            }
                        }
                    },
                "localname":  "ProceedsFromSaleAndMaturityOfMarketableSecurities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment":  {
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                "calculation":  {
                    "http://bench.com/role/CondensedConsolidatedStatementsOfCashFlowsunaudited":  {
                        "order":  24.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.",
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                            "totalLabel":  "Proceeds from Sale of Property, Plant, and Equipment, Total"
                            }
                        }
                    },
                "localname":  "ProceedsFromSaleOfPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromStockOptionsExercised":  {
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                    "r84",
                    "r254"
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                "calculation":  {
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                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow from exercise of option under share-based payment arrangement.",
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                            "terseLabel":  "Total cash received as a result of stock option exercises"
                            }
                        }
                    },
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                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
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                "xbrltype":  "monetaryItemType"
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            "us-gaap_PropertyPlantAndEquipmentNet":  {
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                    "r12",
                    "r181",
                    "r351"
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                        }
                    },
                "crdr":  "debit",
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                            "label":  "Property Plant And Equipment Net",
                            "periodEndLabel":  "Property, Plant and Equipment, Net, Ending Balance",
                            "periodStartLabel":  "Property, Plant and Equipment, Net, Beginning Balance",
                            "terseLabel":  "Property, plant and equipment, net",
                            "totalLabel":  "Property, plant and equipment, Net",
                            "verboseLabel":  "Property, plant and equipment, net of accumulated depreciationof $480,970 and $460,708, respectively"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                "calculation":  {
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                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of expense (reversal of expense) for expected credit loss on accounts receivable.",
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                            "terseLabel":  "Provision for doubtful accounts"
                            }
                        }
                    },
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                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
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                },
            "us-gaap_ReceivablesAbstract":  {
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                    "en-US":  {
                        "role":  {
                            "label":  "Receivables [Abstract]"
                            }
                        }
                    },
                "localname":  "ReceivablesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
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                    "r57"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before tax of reclassification adjustments of other comprehensive income (loss).",
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                            "terseLabel":  "Amounts reclassified from accumulated other comprehensive loss"
                            }
                        }
                    },
                "localname":  "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
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                    "r57",
                    "r64"
                    ],
                "calculation":  {
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                        "weight":  -1.0
                        }
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        },
    "r99":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586"
        }
    },
"version":  "2.1"
}

2 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 5/17/16  Benchmark Electronics Inc.        8-K:5,9     5/11/16    3:255K
11/07/14  Benchmark Electronics Inc.        10-Q        9/30/14   80:7.7M
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