SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Argan Inc. – ‘10-K’ for 1/31/24 – ‘XML’

On:  Thursday, 4/11/24, at 4:16pm ET   ·   For:  1/31/24   ·   Accession #:  1558370-24-4979   ·   File #:  1-31756

Previous ‘10-K’:  ‘10-K’ on 4/17/23 for 1/31/23   ·   Latest ‘10-K’:  This Filing   ·   16 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

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

 4/11/24  Argan Inc.                        10-K        1/31/24  100:11M                                    Toppan Merrill Bridge/FA

Annual Report   —   Form 10-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   2.62M 
 2: EX-23.1     Consent of Expert or Counsel                        HTML     28K 
 7: EX-97.1     Clawback Policy re: Recovery of Erroneously         HTML     43K 
                Awarded Compensation                                             
 3: EX-31.1     Certification -- §302 - SOA'02                      HTML     31K 
 4: EX-31.2     Certification -- §302 - SOA'02                      HTML     31K 
 5: EX-32.1     Certification -- §906 - SOA'02                      HTML     29K 
 6: EX-32.2     Certification -- §906 - SOA'02                      HTML     29K 
13: R1          Document and Entity Information                     HTML     97K 
14: R2          Consolidated Statements of Earnings                 HTML    125K 
15: R3          Consolidated Balance Sheets                         HTML    134K 
16: R4          Consolidated Balance Sheets (Parenthetical)         HTML     49K 
17: R5          Consolidated Statements of Stockholders' Equity     HTML    103K 
18: R6          Consolidated Statements of Cash Flows               HTML    135K 
19: R7          Description of the Business and Basis of            HTML     74K 
                Presentation                                                     
20: R8          Revenues From Contracts With Customers              HTML     57K 
21: R9          Cash, Cash Equivalents and Investments              HTML     84K 
22: R10         Fair Value Measurements                             HTML     75K 
23: R11         Accounts Receivable                                 HTML     30K 
24: R12         Intangible Assets                                   HTML    117K 
25: R13         Property, Plant and Equipment, Net                  HTML     60K 
26: R14         Financing Arrangements                              HTML     35K 
27: R15         Commitments                                         HTML     58K 
28: R16         Legal Contingencies                                 HTML     30K 
29: R17         Stock-Based Compensation                            HTML    101K 
30: R18         Income Taxes                                        HTML    176K 
31: R19         Net Income Per Share                                HTML     61K 
32: R20         Cash Dividends and Common Stock Repurchases         HTML     32K 
33: R21         Variable Interest Entity                            HTML     31K 
34: R22         Customer Concentrations                             HTML     31K 
35: R23         Segment Reporting                                   HTML    295K 
36: R24         Supplemental Financial Statement Information        HTML     57K 
37: R25         Subsequent Events                                   HTML     30K 
38: R26         Description of the Business and Basis of            HTML    115K 
                Presentation (Policies)                                          
39: R27         Revenues From Contracts With Customers (Tables)     HTML     47K 
40: R28         Cash, Cash Equivalents and Investments (Tables)     HTML     80K 
41: R29         Fair Value Measurements (Tables)                    HTML     74K 
42: R30         Intangible Assets (Tables)                          HTML    120K 
43: R31         Property, Plant and Equipment, Net (Tables)         HTML     60K 
44: R32         Commitments (Tables)                                HTML     52K 
45: R33         Stock-Based Compensation (Tables)                   HTML     98K 
46: R34         Income Taxes (Tables)                               HTML    163K 
47: R35         Net Income Per Share (Tables)                       HTML     60K 
48: R36         Segment Reporting (Tables)                          HTML    290K 
49: R37         Supplemental Financial Statement Information        HTML     57K 
                (Tables)                                                         
50: R38         Description of the Business and Basis of            HTML     50K 
                Presentation (Details)                                           
51: R39         REVENUES FROM CONTRACTS WITH CUSTOMERS -            HTML     43K 
                Disaggregation of Revenues (Details)                             
52: R40         Revenues From Contracts With Customers (Details)    HTML     40K 
53: R41         Revenues From Contracts With Customers - Remaining  HTML     35K 
                Unsatisfied Performance Obligations (Details)                    
54: R42         Cash, Cash Equivalents and Investments (Details)    HTML     37K 
55: R43         Cash, Cash Equivalents and Investments -            HTML     34K 
                Investments (Details)                                            
56: R44         CASH, CASH EQUIVALENTS AND INVESTMENTS -            HTML     81K 
                Available-for-Sale Securities (Details)                          
57: R45         CASH, CASH EQUIVALENTS AND INVESTMENTS - Earnings   HTML     29K 
                on Invested Funds (Details)                                      
58: R46         FAIR VALUE MEASUREMENTS - Financial Instruments on  HTML     47K 
                a Recurring Basis (Details)                                      
59: R47         Accounts Receivable (Details)                       HTML     32K 
60: R48         INTANGIBLE ASSETS - Changes in the Balances of      HTML     52K 
                Goodwill (Details)                                               
61: R49         INTANGIBLE ASSETS - Components of Intangible        HTML     42K 
                Assets (Details)                                                 
62: R50         INTANGIBLE ASSETS - Finite Lived Intangible Future  HTML     43K 
                Amortization Schedule (Details)                                  
63: R51         INTANGIBLE ASSETS - Additional Information -        HTML     46K 
                (Details)                                                        
64: R52         PROPERTY, PLANT AND EQUIPMENT, NET - Summary of     HTML     44K 
                Property, Plant and Equipment (Details)                          
65: R53         PROPERTY, PLANT AND EQUIPMENT, NET - Summary of     HTML     36K 
                Property, Plant and Equipment by Geographic Area                 
                (Details)                                                        
66: R54         PROPERTY, PLANT AND EQUIPMENT, NET - Depreciation   HTML     32K 
                Expense and Cost of Maintenance and Repairs                      
                (Details)                                                        
67: R55         Financing Arrangements (Details)                    HTML     42K 
68: R56         COMMITMENTS - Leases (Details)                      HTML     50K 
69: R57         COMMITMENTS - Future minimum lease payments         HTML     54K 
                (Details)                                                        
70: R58         COMMITMENTS - Warranties (Details)                  HTML     30K 
71: R59         COMMITMENTS - Employee Benefit Plans (Details)      HTML     35K 
72: R60         Legal Contingencies (Details)                       HTML     32K 
73: R61         STOCK-BASED COMPENSATION - Summary of Activity      HTML     73K 
                under Company's Stock Option Plans (Details)                     
74: R62         STOCK-BASED COMPENSATION - Summary of Change in     HTML     46K 
                Number of Non-Vested Options to Purchase Shares of               
                Common Stock (Details)                                           
75: R63         STOCK-BASED COMPENSATION - Summary of Change in     HTML     55K 
                restricted stock units (Details)                                 
76: R64         STOCK-BASED COMPENSATION - Additional Information   HTML     95K 
                (Details)                                                        
77: R65         INCOME TAXES - Components of Company's Income Tax   HTML     55K 
                Expense (Details)                                                
78: R66         INCOME TAXES - Income Tax Expense Reconciliation    HTML     58K 
                (Details)                                                        
79: R67         INCOME TAXES - Net Operating Loss Carryback         HTML     32K 
                (Details)                                                        
80: R68         INCOME TAXES - Research and Development Tax         HTML     51K 
                Credits (Details)                                                
81: R69         INCOME TAXES - Unrecognized Income Tax Benefits     HTML     40K 
                (Details)                                                        
82: R70         INCOME TAXES - Schedule of Tax Effects of           HTML     65K 
                Temporary Differences that Gave Rise to Deferred                 
                Tax Assets (Details)                                             
83: R71         INCOME TAXES - Solar Energy Projects And            HTML     51K 
                Supplemental Cash Flow Information (Details)                     
84: R72         Net Income Per Share (Details)                      HTML     60K 
85: R73         Net Income Per Share - Additional information       HTML     29K 
                (Details)                                                        
86: R74         Cash Dividends and Common Stock Repurchases         HTML     57K 
                (Details)                                                        
87: R75         Variable Interest Entity (Details)                  HTML     39K 
88: R76         Customer Concentrations (Details)                   HTML     57K 
89: R77         Segment Reporting (Details)                         HTML    149K 
90: R78         SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION -      HTML     38K 
                Other Current Assets (Details)                                   
91: R79         SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION -      HTML     37K 
                Accrued Expenses (Details)                                       
92: R80         SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION -      HTML     31K 
                Additional Information (Details)                                 
93: R81         Subsequent Events (Details)                         HTML     46K 
94: R82         Pay vs Performance Disclosure                       HTML     39K 
95: R83         Insider Trading Arrangements                        HTML     33K 
97: XML         IDEA XML File -- Filing Summary                      XML    184K 
100: XML         XBRL Instance -- agx-20240131x10k_htm                XML   2.95M  
96: EXCEL       IDEA Workbook of Financial Report Info              XLSX    174K 
 9: EX-101.CAL  XBRL Calculations -- agx-20240131_cal                XML    213K 
10: EX-101.DEF  XBRL Definitions -- agx-20240131_def                 XML    603K 
11: EX-101.LAB  XBRL Labels -- agx-20240131_lab                      XML   1.42M 
12: EX-101.PRE  XBRL Presentations -- agx-20240131_pre               XML   1.11M 
 8: EX-101.SCH  XBRL Schema -- agx-20240131                          XSD    203K 
98: JSON        XBRL Instance as JSON Data -- MetaLinks              589±   894K 
99: ZIP         XBRL Zipped Folder -- 0001558370-24-004979-xbrl      Zip    578K 


‘XML’   —   IDEA XML File — Filing Summary


This Document is an IDEA XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<FilingSummary>
<Version> 3.24.1.u1 </Version>
<ProcessingTime/>
<ReportFormat> html </ReportFormat>
<ContextCount> 204 </ContextCount>
<ElementCount> 421 </ElementCount>
<EntityCount> 1 </EntityCount>
<FootnotesReported> false </FootnotesReported>
<SegmentCount> 69 </SegmentCount>
<ScenarioCount> 0 </ScenarioCount>
<TuplesReported> false </TuplesReported>
<UnitCount> 6 </UnitCount>
<MyReports>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R1.htm </HtmlFileName>
<LongName> 00090 - Document - Document and Entity Information </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DocumentDocumentAndEntityInformation </Role>
<ShortName> Document and Entity Information </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 1 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R2.htm </HtmlFileName>
<LongName> 00100 - Statement - CONSOLIDATED STATEMENTS OF EARNINGS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/StatementConsolidatedStatementsOfEarnings </Role>
<ShortName> CONSOLIDATED STATEMENTS OF EARNINGS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 2 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R3.htm </HtmlFileName>
<LongName> 00200 - Statement - CONSOLIDATED BALANCE SHEETS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/StatementConsolidatedBalanceSheets </Role>
<ShortName> CONSOLIDATED BALANCE SHEETS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 3 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R4.htm </HtmlFileName>
<LongName> 00205 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/StatementConsolidatedBalanceSheetsParenthetical </Role>
<ShortName> CONSOLIDATED BALANCE SHEETS (Parenthetical) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 4 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R5.htm </HtmlFileName>
<LongName> 00300 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/StatementConsolidatedStatementsOfStockholdersEquity </Role>
<ShortName> CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 5 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R6.htm </HtmlFileName>
<LongName> 00400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/StatementConsolidatedStatementsOfCashFlows </Role>
<ShortName> CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 6 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R7.htm </HtmlFileName>
<LongName> 10101 - Disclosure - DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentation </Role>
<ShortName> DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 7 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R8.htm </HtmlFileName>
<LongName> 10201 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomers </Role>
<ShortName> REVENUES FROM CONTRACTS WITH CUSTOMERS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 8 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R9.htm </HtmlFileName>
<LongName> 10301 - Disclosure - CASH, CASH EQUIVALENTS AND INVESTMENTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestments </Role>
<ShortName> CASH, CASH EQUIVALENTS AND INVESTMENTS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 9 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R10.htm </HtmlFileName>
<LongName> 10401 - Disclosure - FAIR VALUE MEASUREMENTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureFairValueMeasurements </Role>
<ShortName> FAIR VALUE MEASUREMENTS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 10 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R11.htm </HtmlFileName>
<LongName> 10501 - Disclosure - ACCOUNTS RECEIVABLE </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureAccountsReceivable </Role>
<ShortName> ACCOUNTS RECEIVABLE </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 11 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R12.htm </HtmlFileName>
<LongName> 10601 - Disclosure - INTANGIBLE ASSETS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIntangibleAssets </Role>
<ShortName> INTANGIBLE ASSETS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 12 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R13.htm </HtmlFileName>
<LongName> 10701 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosurePropertyPlantAndEquipmentNet </Role>
<ShortName> PROPERTY, PLANT AND EQUIPMENT, NET </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 13 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R14.htm </HtmlFileName>
<LongName> 10801 - Disclosure - FINANCING ARRANGEMENTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureFinancingArrangements </Role>
<ShortName> FINANCING ARRANGEMENTS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 14 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R15.htm </HtmlFileName>
<LongName> 10901 - Disclosure - COMMITMENTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCommitments </Role>
<ShortName> COMMITMENTS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 15 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R16.htm </HtmlFileName>
<LongName> 11001 - Disclosure - LEGAL CONTINGENCIES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureLegalContingencies </Role>
<ShortName> LEGAL CONTINGENCIES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 16 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R17.htm </HtmlFileName>
<LongName> 11101 - Disclosure - STOCK-BASED COMPENSATION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureStockBasedCompensation </Role>
<ShortName> STOCK-BASED COMPENSATION </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 17 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R18.htm </HtmlFileName>
<LongName> 11201 - Disclosure - INCOME TAXES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxes </Role>
<ShortName> INCOME TAXES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 18 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R19.htm </HtmlFileName>
<LongName> 11301 - Disclosure - NET INCOME PER SHARE </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureNetIncomePerShare </Role>
<ShortName> NET INCOME PER SHARE </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 19 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R20.htm </HtmlFileName>
<LongName> 11401 - Disclosure - CASH DIVIDENDS AND COMMON STOCK REPURCHASES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashDividendsAndCommonStockRepurchases </Role>
<ShortName> CASH DIVIDENDS AND COMMON STOCK REPURCHASES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 20 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R21.htm </HtmlFileName>
<LongName> 11501 - Disclosure - VARIABLE INTEREST ENTITY </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureVariableInterestEntity </Role>
<ShortName> VARIABLE INTEREST ENTITY </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 21 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R22.htm </HtmlFileName>
<LongName> 11601 - Disclosure - CUSTOMER CONCENTRATIONS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCustomerConcentrations </Role>
<ShortName> CUSTOMER CONCENTRATIONS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 22 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R23.htm </HtmlFileName>
<LongName> 11701 - Disclosure - SEGMENT REPORTING </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSegmentReporting </Role>
<ShortName> SEGMENT REPORTING </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 23 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R24.htm </HtmlFileName>
<LongName> 11801 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSupplementalFinancialStatementInformation </Role>
<ShortName> SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 24 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R25.htm </HtmlFileName>
<LongName> 11901 - Disclosure - SUBSEQUENT EVENTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSubsequentEvents </Role>
<ShortName> SUBSEQUENT EVENTS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 25 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R26.htm </HtmlFileName>
<LongName> 20102 - Disclosure - DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentationPolicies </Role>
<ShortName> DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 26 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R27.htm </HtmlFileName>
<LongName> 30203 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomersTables </Role>
<ShortName> REVENUES FROM CONTRACTS WITH CUSTOMERS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomers </ParentRole>
<Position> 27 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R28.htm </HtmlFileName>
<LongName> 30303 - Disclosure - CASH, CASH EQUIVALENTS AND INVESTMENTS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestmentsTables </Role>
<ShortName> CASH, CASH EQUIVALENTS AND INVESTMENTS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestments </ParentRole>
<Position> 28 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R29.htm </HtmlFileName>
<LongName> 30403 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureFairValueMeasurementsTables </Role>
<ShortName> FAIR VALUE MEASUREMENTS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureFairValueMeasurements </ParentRole>
<Position> 29 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R30.htm </HtmlFileName>
<LongName> 30603 - Disclosure - INTANGIBLE ASSETS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIntangibleAssetsTables </Role>
<ShortName> INTANGIBLE ASSETS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureIntangibleAssets </ParentRole>
<Position> 30 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R31.htm </HtmlFileName>
<LongName> 30703 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosurePropertyPlantAndEquipmentNetTables </Role>
<ShortName> PROPERTY, PLANT AND EQUIPMENT, NET (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosurePropertyPlantAndEquipmentNet </ParentRole>
<Position> 31 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R32.htm </HtmlFileName>
<LongName> 30903 - Disclosure - COMMITMENTS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCommitmentsTables </Role>
<ShortName> COMMITMENTS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureCommitments </ParentRole>
<Position> 32 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R33.htm </HtmlFileName>
<LongName> 31103 - Disclosure - STOCK-BASED COMPENSATION (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureStockBasedCompensationTables </Role>
<ShortName> STOCK-BASED COMPENSATION (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureStockBasedCompensation </ParentRole>
<Position> 33 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R34.htm </HtmlFileName>
<LongName> 31203 - Disclosure - INCOME TAXES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesTables </Role>
<ShortName> INCOME TAXES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureIncomeTaxes </ParentRole>
<Position> 34 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R35.htm </HtmlFileName>
<LongName> 31303 - Disclosure - NET INCOME PER SHARE (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureNetIncomePerShareTables </Role>
<ShortName> NET INCOME PER SHARE (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureNetIncomePerShare </ParentRole>
<Position> 35 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R36.htm </HtmlFileName>
<LongName> 31703 - Disclosure - SEGMENT REPORTING (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSegmentReportingTables </Role>
<ShortName> SEGMENT REPORTING (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureSegmentReporting </ParentRole>
<Position> 36 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R37.htm </HtmlFileName>
<LongName> 31803 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSupplementalFinancialStatementInformationTables </Role>
<ShortName> SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureSupplementalFinancialStatementInformation </ParentRole>
<Position> 37 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R38.htm </HtmlFileName>
<LongName> 40101 - Disclosure - DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentationDetails </Role>
<ShortName> DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentationPolicies </ParentRole>
<Position> 38 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R39.htm </HtmlFileName>
<LongName> 40201 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenues (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomersDisaggregationOfRevenuesDetails </Role>
<ShortName> REVENUES FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenues (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 39 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R40.htm </HtmlFileName>
<LongName> 40202 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomersDetails </Role>
<ShortName> REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomersTables </ParentRole>
<Position> 40 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R41.htm </HtmlFileName>
<LongName> 40203 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS - Remaining Unsatisfied Performance Obligations (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureRevenuesFromContractsWithCustomersRemainingUnsatisfiedPerformanceObligationsDetails </Role>
<ShortName> REVENUES FROM CONTRACTS WITH CUSTOMERS - Remaining Unsatisfied Performance Obligations (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 41 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R42.htm </HtmlFileName>
<LongName> 40301 - Disclosure - CASH, CASH EQUIVALENTS AND INVESTMENTS (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestmentsDetails </Role>
<ShortName> CASH, CASH EQUIVALENTS AND INVESTMENTS (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestmentsTables </ParentRole>
<Position> 42 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R43.htm </HtmlFileName>
<LongName> 40302 - Disclosure - CASH, CASH EQUIVALENTS AND INVESTMENTS - Investments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestmentsInvestmentsDetails </Role>
<ShortName> CASH, CASH EQUIVALENTS AND INVESTMENTS - Investments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 43 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R44.htm </HtmlFileName>
<LongName> 40303 - Disclosure - CASH, CASH EQUIVALENTS AND INVESTMENTS - Available-for-Sale Securities (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestmentsAvailableForSaleSecuritiesDetails </Role>
<ShortName> CASH, CASH EQUIVALENTS AND INVESTMENTS - Available-for-Sale Securities (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 44 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R45.htm </HtmlFileName>
<LongName> 40304 - Disclosure - CASH, CASH EQUIVALENTS AND INVESTMENTS - Earnings on Invested Funds (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashCashEquivalentsAndInvestmentsEarningsOnInvestedFundsDetails </Role>
<ShortName> CASH, CASH EQUIVALENTS AND INVESTMENTS - Earnings on Invested Funds (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 45 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R46.htm </HtmlFileName>
<LongName> 40401 - Disclosure - FAIR VALUE MEASUREMENTS - Financial Instruments on a Recurring Basis (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureFairValueMeasurementsFinancialInstrumentsOnRecurringBasisDetails </Role>
<ShortName> FAIR VALUE MEASUREMENTS - Financial Instruments on a Recurring Basis (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 46 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R47.htm </HtmlFileName>
<LongName> 40501 - Disclosure - ACCOUNTS RECEIVABLE (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureAccountsReceivableDetails </Role>
<ShortName> ACCOUNTS RECEIVABLE (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureAccountsReceivable </ParentRole>
<Position> 47 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R48.htm </HtmlFileName>
<LongName> 40601 - Disclosure - INTANGIBLE ASSETS - Changes in the Balances of Goodwill (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIntangibleAssetsChangesInBalancesOfGoodwillDetails </Role>
<ShortName> INTANGIBLE ASSETS - Changes in the Balances of Goodwill (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 48 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R49.htm </HtmlFileName>
<LongName> 40602 - Disclosure - INTANGIBLE ASSETS - Components of Intangible Assets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIntangibleAssetsComponentsOfIntangibleAssetsDetails </Role>
<ShortName> INTANGIBLE ASSETS - Components of Intangible Assets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 49 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R50.htm </HtmlFileName>
<LongName> 40603 - Disclosure - INTANGIBLE ASSETS - Finite Lived Intangible Future Amortization Schedule (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIntangibleAssetsFiniteLivedIntangibleFutureAmortizationScheduleDetails </Role>
<ShortName> INTANGIBLE ASSETS - Finite Lived Intangible Future Amortization Schedule (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 50 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R51.htm </HtmlFileName>
<LongName> 40604 - Disclosure - INTANGIBLE ASSETS - Additional Information - (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIntangibleAssetsAdditionalInformationDetails </Role>
<ShortName> INTANGIBLE ASSETS - Additional Information - (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 51 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R52.htm </HtmlFileName>
<LongName> 40701 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET - Summary of Property, Plant and Equipment (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosurePropertyPlantAndEquipmentNetSummaryOfPropertyPlantAndEquipmentDetails </Role>
<ShortName> PROPERTY, PLANT AND EQUIPMENT, NET - Summary of Property, Plant and Equipment (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 52 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R53.htm </HtmlFileName>
<LongName> 40702 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET - Summary of Property, Plant and Equipment by Geographic Area (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosurePropertyPlantAndEquipmentNetSummaryOfPropertyPlantAndEquipmentByGeographicAreaDetails </Role>
<ShortName> PROPERTY, PLANT AND EQUIPMENT, NET - Summary of Property, Plant and Equipment by Geographic Area (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 53 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R54.htm </HtmlFileName>
<LongName> 40703 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET - Depreciation Expense and Cost of Maintenance and Repairs (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosurePropertyPlantAndEquipmentNetDepreciationExpenseAndCostOfMaintenanceAndRepairsDetails </Role>
<ShortName> PROPERTY, PLANT AND EQUIPMENT, NET - Depreciation Expense and Cost of Maintenance and Repairs (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 54 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R55.htm </HtmlFileName>
<LongName> 40801 - Disclosure - FINANCING ARRANGEMENTS (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureFinancingArrangementsDetails </Role>
<ShortName> FINANCING ARRANGEMENTS (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureFinancingArrangements </ParentRole>
<Position> 55 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R56.htm </HtmlFileName>
<LongName> 40901 - Disclosure - COMMITMENTS - Leases (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCommitmentsLeasesDetails </Role>
<ShortName> COMMITMENTS - Leases (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 56 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R57.htm </HtmlFileName>
<LongName> 40902 - Disclosure - COMMITMENTS - Future minimum lease payments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCommitmentsFutureMinimumLeasePaymentsDetails </Role>
<ShortName> COMMITMENTS - Future minimum lease payments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 57 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R58.htm </HtmlFileName>
<LongName> 40903 - Disclosure - COMMITMENTS - Warranties (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCommitmentsWarrantiesDetails </Role>
<ShortName> COMMITMENTS - Warranties (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 58 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R59.htm </HtmlFileName>
<LongName> 40904 - Disclosure - COMMITMENTS - Employee Benefit Plans (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCommitmentsEmployeeBenefitPlansDetails </Role>
<ShortName> COMMITMENTS - Employee Benefit Plans (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 59 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R60.htm </HtmlFileName>
<LongName> 41001 - Disclosure - LEGAL CONTINGENCIES (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureLegalContingenciesDetails </Role>
<ShortName> LEGAL CONTINGENCIES (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureLegalContingencies </ParentRole>
<Position> 60 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R61.htm </HtmlFileName>
<LongName> 41101 - Disclosure - STOCK-BASED COMPENSATION - Summary of Activity under Company's Stock Option Plans (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureStockBasedCompensationSummaryOfActivityUnderCompanySStockOptionPlansDetails </Role>
<ShortName> STOCK-BASED COMPENSATION - Summary of Activity under Company's Stock Option Plans (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 61 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R62.htm </HtmlFileName>
<LongName> 41102 - Disclosure - STOCK-BASED COMPENSATION - Summary of Change in Number of Non-Vested Options to Purchase Shares of Common Stock (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureStockBasedCompensationSummaryOfChangeInNumberOfNonVestedOptionsToPurchaseSharesOfCommonStockDetails </Role>
<ShortName> STOCK-BASED COMPENSATION - Summary of Change in Number of Non-Vested Options to Purchase Shares of Common Stock (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 62 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R63.htm </HtmlFileName>
<LongName> 41103 - Disclosure - STOCK-BASED COMPENSATION - Summary of Change in restricted stock units (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureStockBasedCompensationSummaryOfChangeInRestrictedStockUnitsDetails </Role>
<ShortName> STOCK-BASED COMPENSATION - Summary of Change in restricted stock units (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 63 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R64.htm </HtmlFileName>
<LongName> 41104 - Disclosure - STOCK-BASED COMPENSATION - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureStockBasedCompensationAdditionalInformationDetails </Role>
<ShortName> STOCK-BASED COMPENSATION - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 64 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R65.htm </HtmlFileName>
<LongName> 41201 - Disclosure - INCOME TAXES - Components of Company's Income Tax Expense (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesComponentsOfCompanySIncomeTaxExpenseDetails </Role>
<ShortName> INCOME TAXES - Components of Company's Income Tax Expense (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 65 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R66.htm </HtmlFileName>
<LongName> 41202 - Disclosure - INCOME TAXES - Income Tax Expense Reconciliation (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesIncomeTaxExpenseReconciliationDetails </Role>
<ShortName> INCOME TAXES - Income Tax Expense Reconciliation (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 66 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R67.htm </HtmlFileName>
<LongName> 41203 - Disclosure - INCOME TAXES - Net Operating Loss Carryback (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesNetOperatingLossCarrybackDetails </Role>
<ShortName> INCOME TAXES - Net Operating Loss Carryback (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 67 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R68.htm </HtmlFileName>
<LongName> 41204 - Disclosure - INCOME TAXES - Research and Development Tax Credits (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesResearchAndDevelopmentTaxCreditsDetails </Role>
<ShortName> INCOME TAXES - Research and Development Tax Credits (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 68 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R69.htm </HtmlFileName>
<LongName> 41205 - Disclosure - INCOME TAXES - Unrecognized Income Tax Benefits (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesUnrecognizedIncomeTaxBenefitsDetails </Role>
<ShortName> INCOME TAXES - Unrecognized Income Tax Benefits (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 69 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R70.htm </HtmlFileName>
<LongName> 41206 - Disclosure - INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesScheduleOfTaxEffectsOfTemporaryDifferencesThatGaveRiseToDeferredTaxAssetsDetails </Role>
<ShortName> INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 70 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R71.htm </HtmlFileName>
<LongName> 41207 - Disclosure - INCOME TAXES - Solar Energy Projects And Supplemental Cash Flow Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureIncomeTaxesSolarEnergyProjectsAndSupplementalCashFlowInformationDetails </Role>
<ShortName> INCOME TAXES - Solar Energy Projects And Supplemental Cash Flow Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 71 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R72.htm </HtmlFileName>
<LongName> 41301 - Disclosure - NET INCOME PER SHARE (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureNetIncomePerShareDetails </Role>
<ShortName> NET INCOME PER SHARE (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureNetIncomePerShareTables </ParentRole>
<Position> 72 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R73.htm </HtmlFileName>
<LongName> 41302 - Disclosure - NET INCOME PER SHARE - Additional information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureNetIncomePerShareAdditionalInformationDetails </Role>
<ShortName> NET INCOME PER SHARE - Additional information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 73 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R74.htm </HtmlFileName>
<LongName> 41401 - Disclosure - CASH DIVIDENDS AND COMMON STOCK REPURCHASES (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCashDividendsAndCommonStockRepurchasesDetails </Role>
<ShortName> CASH DIVIDENDS AND COMMON STOCK REPURCHASES (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureCashDividendsAndCommonStockRepurchases </ParentRole>
<Position> 74 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R75.htm </HtmlFileName>
<LongName> 41501 - Disclosure - VARIABLE INTEREST ENTITY (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureVariableInterestEntityDetails </Role>
<ShortName> VARIABLE INTEREST ENTITY (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureVariableInterestEntity </ParentRole>
<Position> 75 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R76.htm </HtmlFileName>
<LongName> 41601 - Disclosure - CUSTOMER CONCENTRATIONS (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureCustomerConcentrationsDetails </Role>
<ShortName> CUSTOMER CONCENTRATIONS (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureCustomerConcentrations </ParentRole>
<Position> 76 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R77.htm </HtmlFileName>
<LongName> 41701 - Disclosure - SEGMENT REPORTING (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSegmentReportingDetails </Role>
<ShortName> SEGMENT REPORTING (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureSegmentReportingTables </ParentRole>
<Position> 77 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R78.htm </HtmlFileName>
<LongName> 41801 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION - Other Current Assets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSupplementalFinancialStatementInformationOtherCurrentAssetsDetails </Role>
<ShortName> SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION - Other Current Assets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 78 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R79.htm </HtmlFileName>
<LongName> 41802 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION - Accrued Expenses (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSupplementalFinancialStatementInformationAccruedExpensesDetails </Role>
<ShortName> SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION - Accrued Expenses (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 79 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R80.htm </HtmlFileName>
<LongName> 41803 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSupplementalFinancialStatementInformationAdditionalInformationDetails </Role>
<ShortName> SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 80 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R81.htm </HtmlFileName>
<LongName> 41901 - Disclosure - SUBSEQUENT EVENTS (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.arganinc.com/role/DisclosureSubsequentEventsDetails </Role>
<ShortName> SUBSEQUENT EVENTS (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.arganinc.com/role/DisclosureSubsequentEvents </ParentRole>
<Position> 81 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R82.htm </HtmlFileName>
<LongName> 995410 - Disclosure - Pay vs Performance Disclosure </LongName>
<ReportType> Sheet </ReportType>
<Role> http://xbrl.sec.gov/ecd/role/PvpDisclosure </Role>
<ShortName> Pay vs Performance Disclosure </ShortName>
<MenuCategory> Uncategorized </MenuCategory>
<Position> 82 </Position>
</Report>
<Report instance="agx-20240131x10k.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R83.htm </HtmlFileName>
<LongName> 995445 - Disclosure - Insider Trading Arrangements </LongName>
<ReportType> Sheet </ReportType>
<Role> http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements </Role>
<ShortName> Insider Trading Arrangements </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 83 </Position>
</Report>
<Report>
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<LongName> All Reports </LongName>
<ReportType> Book </ReportType>
<ShortName> All Reports </ShortName>
</Report>
</MyReports>
<Logs>
<Log type="Warning"> [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 13 fact(s) appearing in ix:hidden were eligible for transformation: agx:DefineContributionPlanDeferredPeriod, agx:PeriodOfAmortizationOfGoodwillForIncomeTaxPurpose, agx:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeriodForMonthlyClosingPrices, agx:WarrantyPeriodForConstructionContracts, dei:EntityRegistrantName, us-gaap:CommonStockSharesIssued, us-gaap:DebtSecuritiesAvailableForSaleTerm, us-gaap:PreferredStockSharesOutstanding, us-gaap:PropertyPlantAndEquipmentUsefulLife, us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1, us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage, us-gaap:StockRepurchasedDuringPeriodValue - agx-20240131x10k.htm 9 </Log>
<Log type="Warning"> [ix-0514-Hidden-Fact-Not-Referenced] WARN: 4 fact(s) appearing in ix:hidden were not referenced by any -sec-ix-hidden style property: us-gaap:CommitmentsAndContingencies, us-gaap:OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList - agx-20240131x10k.htm 9 </Log>
<Log type="Warning"> [dq-0712-Presentation-Base-Set-Order] Role '41901 - Disclosure - SUBSEQUENT EVENTS (Details)', a level 4, Detail role, appears before '995410 - Disclosure - Pay vs Performance Disclosure', a level 1, Note role. agx-20240131.xsd 459, https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd 30 </Log>
</Logs>
<InputFiles>
<File> agx-20240131.xsd </File>
<File> agx-20240131_cal.xml </File>
<File> agx-20240131_def.xml </File>
<File> agx-20240131_lab.xml </File>
<File> agx-20240131_pre.xml </File>
<File doctype="10-K" isDefinitelyFs="true" isUsgaap="true" original="agx-20240131x10k.htm"> agx-20240131x10k.htm </File>
</InputFiles>
<SupplementalFiles>
<File> agx-20240131x10k001.jpg </File>
<File> agx-20240131x10k002.jpg </File>
</SupplementalFiles>
<BaseTaxonomies>
<BaseTaxonomy items="975"> http://fasb.org/us-gaap/2023 </BaseTaxonomy>
<BaseTaxonomy items="38"> http://xbrl.sec.gov/dei/2023 </BaseTaxonomy>
<BaseTaxonomy items="4"> http://xbrl.sec.gov/ecd/2023 </BaseTaxonomy>
</BaseTaxonomies>
<HasPresentationLinkbase> true </HasPresentationLinkbase>
<HasCalculationLinkbase> true </HasCalculationLinkbase>
</FilingSummary>


16 Previous Filings that this Filing References

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

 5/01/23  Argan Inc.                        DEF 14A     4/28/23   12:4.4M                                   Toppan Merrill Bridge/FA
 3/08/23  Argan Inc.                        8-K:1,2,9   3/06/23   12:345K                                   Toppan Merrill Bridge/FA
 9/08/22  Argan Inc.                        10-Q        7/31/22   69:7.8M                                   Toppan Merrill Bridge/FA
 8/18/22  Argan Inc.                        8-K:5,9     8/16/22   12:203K                                   Toppan Merrill Bridge/FA
 5/04/21  Argan Inc.                        8-K:1,2,9   4/30/21   11:360K                                   Toppan Merrill Bridge/FA
 4/14/21  Argan Inc.                        10-K        1/31/21   85:9.4M                                   Toppan Merrill Bridge/FA
12/10/20  Argan Inc.                        8-K:2,8,9  12/09/20   13:505K                                   Toppan Merrill Bridge/FA
12/09/20  Argan Inc.                        10-Q       10/31/20   68:6.8M                                   Toppan Merrill Bridge/FA
 4/14/20  Argan Inc.                        10-K        1/31/20   87:8.8M                                   Toppan Merrill/FA
12/10/19  Argan Inc.                        10-Q       10/31/19   69:7M                                     Toppan Merrill/FA
 4/10/19  Argan Inc.                        10-K        1/31/19   86:18M                                    Toppan Merrill/FA
 5/07/18  Argan Inc.                        DEF 14A     6/21/18    1:1.3M                                   Toppan Merrill/FA
 5/17/17  Argan Inc.                        8-K:1,2,9   5/15/17    2:860K                                   Toppan Merrill/FA
 4/11/17  Argan Inc.                        10-K        1/31/17   85:8M                                     Toppan Merrill/FA
 4/15/09  Argan Inc.                        10-K        1/31/09    9:798K                                   Bowne - BPC/FA
 4/27/04  Argan Inc.                        10KSB       1/31/04   12:478K                                   EDGARX.com, LLC/FA
Top
Filing Submission 0001558370-24-004979   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., May 17, 2:43:35.2pm ET