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

Montauk Renewables, Inc. – ‘10-Q’ for 6/30/22 – ‘XML’

On:  Tuesday, 8/9/22, at 4:44pm ET   ·   For:  6/30/22   ·   Accession #:  1193125-22-216242   ·   File #:  1-39919

Previous ‘10-Q’:  ‘10-Q’ on 5/10/22 for 3/31/22   ·   Next:  ‘10-Q’ on 11/9/22 for 9/30/22   ·   Latest:  ‘10-Q’ on 5/9/24 for 3/31/24   ·   1 Reference:  To:  Montauk Renewables, Inc. – ‘8-K’ on 6/1/22 for 5/26/22

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

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

 8/09/22  Montauk Renewables, Inc.          10-Q        6/30/22   92:7.7M                                   Donnelley … Solutions/FA

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.80M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     30K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     30K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     25K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     25K 
11: R1          Cover Page                                          HTML     81K 
12: R2          Condensed Consolidated Balance Sheets               HTML    143K 
13: R3          Condensed Consolidated Balance Sheets               HTML     36K 
                (Parenthetical)                                                  
14: R4          Condensed Consolidated Statements of Operations     HTML    109K 
15: R5          Condensed Consolidated Statements of Stockholders'  HTML     77K 
                Equity                                                           
16: R6          Condensed Consolidated Statements of Cash Flows     HTML    114K 
17: R7          Description of Business                             HTML     39K 
18: R8          Summary of Significant Accounting Policies          HTML     38K 
19: R9          Asset Impairment                                    HTML     28K 
20: R10         Revenues from Contracts with Customers              HTML     95K 
21: R11         Accounts and Other Receivables                      HTML     34K 
22: R12         Prepaid Expenses and Other Current Assets           HTML     27K 
23: R13         Assets Held For Sale                                HTML     27K 
24: R14         Property, Plant and Equipment, Net                  HTML     38K 
25: R15         Goodwill And Intangible Assets, Net                 HTML     38K 
26: R16         Assets Retirement Obligations                       HTML     34K 
27: R17         Derivative Instruments                              HTML     43K 
28: R18         Fair Value of Financial Instruments                 HTML     51K 
29: R19         Accrued Liabilities                                 HTML     34K 
30: R20         Debt                                                HTML     45K 
31: R21         Income Taxes                                        HTML     38K 
32: R22         Share-Based Compensation                            HTML     87K 
33: R23         Defined Contribution Plan                           HTML     28K 
34: R24         Related Party Transactions                          HTML     31K 
35: R25         Segment Information                                 HTML    184K 
36: R26         Leases                                              HTML     53K 
37: R27         Income (loss) per share                             HTML     43K 
38: R28         Subsequent Events                                   HTML     27K 
39: R29         Summary of Significant Accounting Policies          HTML     50K 
                (Policies)                                                       
40: R30         Revenues from Contracts with Customers (Tables)     HTML     92K 
41: R31         Accounts and Other Receivables (Tables)             HTML     33K 
42: R32         Property, Plant and Equipment, Net (Tables)         HTML     37K 
43: R33         Goodwill And Intangible Assets, Net (Tables)        HTML     37K 
44: R34         Asset Retirement Obligations (Tables)               HTML     33K 
45: R35         Derivative Instruments (Tables)                     HTML     44K 
46: R36         Fair Value of Financial Instruments (Tables)        HTML     49K 
47: R37         Accrued Liabilities (Tables)                        HTML     34K 
48: R38         Debt (Tables)                                       HTML     38K 
49: R39         Income Taxes (Tables)                               HTML     34K 
50: R40         Share-Based Compensation (Tables)                   HTML     84K 
51: R41         Segment Information (Tables)                        HTML    182K 
52: R42         Leases (Tables)                                     HTML     55K 
53: R43         Income (Loss) Per Share (Tables)                    HTML     42K 
54: R44         Description of Business - Additional Information    HTML     36K 
                (Detail)                                                         
55: R45         Summary of Significant Accounting Policies -        HTML     30K 
                Additional Information (Detail)                                  
56: R46         Asset Impairment - Additional Information (Detail)  HTML     31K 
57: R47         Revenues from Contracts with Customers - Summary    HTML     62K 
                of Company's Revenue by Major Source (Detail)                    
58: R48         Accounts and Other Receivables - Schedule of        HTML     32K 
                Accounts and Other Receivables (Detail)                          
59: R49         Accounts and Other Receivables - Additional         HTML     26K 
                Information (Detail)                                             
60: R50         Prepaid Expenses and Other Current Assets -         HTML     39K 
                Additional Information (Detail)                                  
61: R51         Assets Held For Sale -Additional Information        HTML     31K 
                (Detail)                                                         
62: R52         Property, Plant and Equipment, Net - Summary of     HTML     44K 
                Property Plant and Equipment (Detail)                            
63: R53         Property, Plant and Equipment, Net - Additional     HTML     32K 
                Information (Detail)                                             
64: R54         Goodwill And Intangible Assets, Net - Schedule of   HTML     44K 
                Intangible Assets (Detail)                                       
65: R55         Goodwill And Intangible Assets, Net - Schedule of   HTML     31K 
                Intangible Assets (Detail) (Parenthetical)                       
66: R56         Goodwill And Intangible Assets, Net - Additional    HTML     34K 
                Information (Detail)                                             
67: R57         Assets Retirement Obligations - Summary of          HTML     32K 
                Activity Associated with Asset Retirement                        
                Obligations (Detail)                                             
68: R58         Derivative Instruments - Summary of Realized and    HTML     38K 
                Unrealized Gains and Losses of Derivative                        
                Instrument (Detail)                                              
69: R59         Fair Value of Financial Instruments - Summary of    HTML     55K 
                Assets and Liabilities Measured at Fair Value on a               
                Recurring Basis (Detail)                                         
70: R60         Accrued Liabilities - Summary of Accrued            HTML     38K 
                Liabilities (Detail)                                             
71: R61         Debt - Summary of Company Debt (Detail)             HTML     42K 
72: R62         Debt - Additional Information (Detail)              HTML     74K 
73: R63         Income Taxes - Schedule of Effective Income Tax     HTML     31K 
                Rate Reconciliation (Detail)                                     
74: R64         Income Taxes - Additional Information (Detail)      HTML     27K 
75: R65         Share-Based Compensation - Summary of Fair Value    HTML     36K 
                of MRI EICP Options and Valuation Assumptions                    
                (Detail)                                                         
76: R66         Share-Based Compensation - Summary of Outstanding   HTML     72K 
                Activity of Options,Restricted Stock and                         
                Restricted Stock Units under MRI EICP (Detail)                   
77: R67         Share-Based Compensation - Additional Information   HTML     56K 
                (Detail)                                                         
78: R68         Defined Contribution Plan - Additional Information  HTML     37K 
                (Detail)                                                         
79: R69         Related Party Transactions - Additional             HTML     46K 
                Information (Detail)                                             
80: R70         Segment Information - Summary of Reconciliation of  HTML    117K 
                the Company's Reportable Segments' Net Income from               
                Continuing Operations (Detail)                                   
81: R71         Segment Information - Summary of Revenue by Major   HTML     56K 
                Customers (Detail)                                               
82: R72         Leases - Summary of Supplemental Information        HTML     32K 
                Related To Operating Leases (Detail)                             
83: R73         Leases - Summary of Future Minimum Operating Lease  HTML     42K 
                Payments (Detail)                                                
84: R74         Leases - Summary of Supplemental Information        HTML     31K 
                Related To Finance Leases (Detail)                               
85: R75         Leases - Summary of Future Minimum Finance Lease    HTML     35K 
                Payments (Detail)                                                
86: R76         Income (loss) per share - Schedule of Loss Per      HTML     59K 
                Share, Basic and Diluted (Detail)                                
87: R77         Income (loss) per share - Additional Information    HTML     27K 
                (Detail)                                                         
90: XML         IDEA XML File -- Filing Summary                      XML    167K 
88: XML         XBRL Instance -- d364891d10q_htm                     XML   2.07M 
89: EXCEL       IDEA Workbook of Financial Reports                  XLSX    139K 
 7: EX-101.CAL  XBRL Calculations -- mntk-20220630_cal               XML    138K 
 8: EX-101.DEF  XBRL Definitions -- mntk-20220630_def                XML    583K 
 9: EX-101.LAB  XBRL Labels -- mntk-20220630_lab                     XML   1.10M 
10: EX-101.PRE  XBRL Presentations -- mntk-20220630_pre              XML    822K 
 6: EX-101.SCH  XBRL Schema -- mntk-20220630                         XSD    184K 
91: JSON        XBRL Instance as JSON Data -- MetaLinks              415±   604K 
92: ZIP         XBRL Zipped Folder -- 0001193125-22-216242-xbrl      Zip    261K

‘XML’   —   IDEA XML File — Filing Summary

This Document is an IDEA XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<FilingSummary>
<Version> 3.22.2 </Version>
<ProcessingTime/>
<ReportFormat> html </ReportFormat>
<ContextCount> 281 </ContextCount>
<ElementCount> 294 </ElementCount>
<EntityCount> 1 </EntityCount>
<FootnotesReported> true </FootnotesReported>
<SegmentCount> 67 </SegmentCount>
<ScenarioCount> 0 </ScenarioCount>
<TuplesReported> false </TuplesReported>
<UnitCount> 7 </UnitCount>
<MyReports>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R1.htm </HtmlFileName>
<LongName> 1001 - Document - Cover Page </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/CoverPage </Role>
<ShortName> Cover Page </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 1 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R2.htm </HtmlFileName>
<LongName> 1002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/CondensedConsolidatedBalanceSheets </Role>
<ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 2 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R3.htm </HtmlFileName>
<LongName> 1003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/CondensedConsolidatedBalanceSheetsParenthetical </Role>
<ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 3 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R4.htm </HtmlFileName>
<LongName> 1004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/CondensedConsolidatedStatementsOfOperations </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 4 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R5.htm </HtmlFileName>
<LongName> 1005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/CondensedConsolidatedStatementsOfStockholdersEquity </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 5 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R6.htm </HtmlFileName>
<LongName> 1006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/CondensedConsolidatedStatementsOfCashFlows </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 6 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R7.htm </HtmlFileName>
<LongName> 1007 - Disclosure - Description of Business </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DescriptionOfBusiness </Role>
<ShortName> Description of Business </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 7 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R8.htm </HtmlFileName>
<LongName> 1008 - Disclosure - Summary of Significant Accounting Policies </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SummaryOfSignificantAccountingPolicies </Role>
<ShortName> Summary of Significant Accounting Policies </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 8 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R9.htm </HtmlFileName>
<LongName> 1009 - Disclosure - Asset Impairment </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetImpairment </Role>
<ShortName> Asset Impairment </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 9 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R10.htm </HtmlFileName>
<LongName> 1010 - Disclosure - Revenues from Contracts with Customers </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/RevenuesFromContractsWithCustomers </Role>
<ShortName> Revenues from Contracts with Customers </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 10 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R11.htm </HtmlFileName>
<LongName> 1011 - Disclosure - Accounts and Other Receivables </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccountsAndOtherReceivables </Role>
<ShortName> Accounts and Other Receivables </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 11 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R12.htm </HtmlFileName>
<LongName> 1012 - Disclosure - Prepaid Expenses and Other Current Assets </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/PrepaidExpensesAndOtherCurrentAssets </Role>
<ShortName> Prepaid Expenses and Other Current Assets </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 12 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R13.htm </HtmlFileName>
<LongName> 1013 - Disclosure - Assets Held For Sale </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetsHeldForSale </Role>
<ShortName> Assets Held For Sale </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 13 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R14.htm </HtmlFileName>
<LongName> 1014 - Disclosure - Property, Plant and Equipment, Net </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/PropertyPlantAndEquipmentNet </Role>
<ShortName> Property, Plant and Equipment, Net </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 14 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R15.htm </HtmlFileName>
<LongName> 1015 - Disclosure - Goodwill And Intangible Assets, Net </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/GoodwillAndIntangibleAssetsNet </Role>
<ShortName> Goodwill And Intangible Assets, Net </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 15 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R16.htm </HtmlFileName>
<LongName> 1016 - Disclosure - Assets Retirement Obligations </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetsRetirementObligations </Role>
<ShortName> Assets Retirement Obligations </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 16 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R17.htm </HtmlFileName>
<LongName> 1017 - Disclosure - Derivative Instruments </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DerivativeInstruments </Role>
<ShortName> Derivative Instruments </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 17 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R18.htm </HtmlFileName>
<LongName> 1018 - Disclosure - Fair Value of Financial Instruments </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/FairValueOfFinancialInstruments </Role>
<ShortName> Fair Value of Financial Instruments </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 18 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R19.htm </HtmlFileName>
<LongName> 1019 - Disclosure - Accrued Liabilities </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccruedLiabilities </Role>
<ShortName> Accrued Liabilities </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 19 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R20.htm </HtmlFileName>
<LongName> 1020 - Disclosure - Debt </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/Debt </Role>
<ShortName> Debt </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 20 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R21.htm </HtmlFileName>
<LongName> 1021 - Disclosure - Income Taxes </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeTaxes </Role>
<ShortName> Income Taxes </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 21 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R22.htm </HtmlFileName>
<LongName> 1022 - Disclosure - Share-Based Compensation </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/ShareBasedCompensation </Role>
<ShortName> Share-Based Compensation </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 22 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R23.htm </HtmlFileName>
<LongName> 1023 - Disclosure - Defined Contribution Plan </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DefinedContributionPlan </Role>
<ShortName> Defined Contribution Plan </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 23 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R24.htm </HtmlFileName>
<LongName> 1024 - Disclosure - Related Party Transactions </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/RelatedPartyTransactions </Role>
<ShortName> Related Party Transactions </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 24 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R25.htm </HtmlFileName>
<LongName> 1025 - Disclosure - Segment Information </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SegmentInformation </Role>
<ShortName> Segment Information </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 25 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R26.htm </HtmlFileName>
<LongName> 1026 - Disclosure - Leases </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/Leases </Role>
<ShortName> Leases </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 26 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R27.htm </HtmlFileName>
<LongName> 1027 - Disclosure - Income (loss) per share </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeLossPerShare </Role>
<ShortName> Income (loss) per share </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 27 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R28.htm </HtmlFileName>
<LongName> 1028 - Disclosure - Subsequent Events </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SubsequentEvents </Role>
<ShortName> Subsequent Events </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 28 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R29.htm </HtmlFileName>
<LongName> 1029 - Disclosure - Summary of Significant Accounting Policies (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SummaryOfSignificantAccountingPoliciesPolicies </Role>
<ShortName> Summary of Significant Accounting Policies (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/SummaryOfSignificantAccountingPolicies </ParentRole>
<Position> 29 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R30.htm </HtmlFileName>
<LongName> 1030 - Disclosure - Revenues from Contracts with Customers (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/RevenuesFromContractsWithCustomersTables </Role>
<ShortName> Revenues from Contracts with Customers (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/RevenuesFromContractsWithCustomers </ParentRole>
<Position> 30 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R31.htm </HtmlFileName>
<LongName> 1031 - Disclosure - Accounts and Other Receivables (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccountsAndOtherReceivablesTables </Role>
<ShortName> Accounts and Other Receivables (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/AccountsAndOtherReceivables </ParentRole>
<Position> 31 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R32.htm </HtmlFileName>
<LongName> 1032 - Disclosure - Property, Plant and Equipment, Net (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/PropertyPlantAndEquipmentNetTables </Role>
<ShortName> Property, Plant and Equipment, Net (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/PropertyPlantAndEquipmentNet </ParentRole>
<Position> 32 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R33.htm </HtmlFileName>
<LongName> 1033 - Disclosure - Goodwill And Intangible Assets, Net (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/GoodwillAndIntangibleAssetsNetTables </Role>
<ShortName> Goodwill And Intangible Assets, Net (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/GoodwillAndIntangibleAssetsNet </ParentRole>
<Position> 33 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R34.htm </HtmlFileName>
<LongName> 1034 - Disclosure - Asset Retirement Obligations (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetRetirementObligationsTables </Role>
<ShortName> Asset Retirement Obligations (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<Position> 34 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R35.htm </HtmlFileName>
<LongName> 1035 - Disclosure - Derivative Instruments (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DerivativeInstrumentsTables </Role>
<ShortName> Derivative Instruments (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/DerivativeInstruments </ParentRole>
<Position> 35 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R36.htm </HtmlFileName>
<LongName> 1036 - Disclosure - Fair Value of Financial Instruments (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/FairValueOfFinancialInstrumentsTables </Role>
<ShortName> Fair Value of Financial Instruments (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/FairValueOfFinancialInstruments </ParentRole>
<Position> 36 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R37.htm </HtmlFileName>
<LongName> 1037 - Disclosure - Accrued Liabilities (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccruedLiabilitiesTables </Role>
<ShortName> Accrued Liabilities (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/AccruedLiabilities </ParentRole>
<Position> 37 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R38.htm </HtmlFileName>
<LongName> 1038 - Disclosure - Debt (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DebtTables </Role>
<ShortName> Debt (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/Debt </ParentRole>
<Position> 38 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R39.htm </HtmlFileName>
<LongName> 1039 - Disclosure - Income Taxes (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeTaxesTables </Role>
<ShortName> Income Taxes (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/IncomeTaxes </ParentRole>
<Position> 39 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R40.htm </HtmlFileName>
<LongName> 1040 - Disclosure - Share-Based Compensation (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/ShareBasedCompensationTables </Role>
<ShortName> Share-Based Compensation (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/ShareBasedCompensation </ParentRole>
<Position> 40 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R41.htm </HtmlFileName>
<LongName> 1041 - Disclosure - Segment Information (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SegmentInformationTables </Role>
<ShortName> Segment Information (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/SegmentInformation </ParentRole>
<Position> 41 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R42.htm </HtmlFileName>
<LongName> 1042 - Disclosure - Leases (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/LeasesTables </Role>
<ShortName> Leases (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/Leases </ParentRole>
<Position> 42 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R43.htm </HtmlFileName>
<LongName> 1043 - Disclosure - Income (loss) per share (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeLossPerShareTables </Role>
<ShortName> Income (loss) per share (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/IncomeTaxes </ParentRole>
<Position> 43 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R44.htm </HtmlFileName>
<LongName> 1044 - Disclosure - Description of Business - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DescriptionOfBusinessAdditionalInformationDetail </Role>
<ShortName> Description of Business - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 44 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R45.htm </HtmlFileName>
<LongName> 1045 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SummaryOfSignificantAccountingPoliciesAdditionalInformationDetail </Role>
<ShortName> Summary of Significant Accounting Policies - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 45 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R46.htm </HtmlFileName>
<LongName> 1046 - Disclosure - Asset Impairment - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetImpairmentAdditionalInformationDetail </Role>
<ShortName> Asset Impairment - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 46 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R47.htm </HtmlFileName>
<LongName> 1047 - Disclosure - Revenues from Contracts with Customers - Summary of Company's Revenue by Major Source (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/RevenuesFromContractsWithCustomersSummaryOfCompanysRevenueByMajorSourceDetail </Role>
<ShortName> Revenues from Contracts with Customers - Summary of Company's Revenue by Major Source (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 47 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R48.htm </HtmlFileName>
<LongName> 1048 - Disclosure - Accounts and Other Receivables - Schedule of Accounts and Other Receivables (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccountsAndOtherReceivablesScheduleOfAccountsAndOtherReceivablesDetail </Role>
<ShortName> Accounts and Other Receivables - Schedule of Accounts and Other Receivables (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 48 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R49.htm </HtmlFileName>
<LongName> 1049 - Disclosure - Accounts and Other Receivables - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccountsAndOtherReceivablesAdditionalInformationDetail </Role>
<ShortName> Accounts and Other Receivables - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 49 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R50.htm </HtmlFileName>
<LongName> 1050 - Disclosure - Prepaid Expenses and Other Current Assets - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/PrepaidExpensesAndOtherCurrentAssetsAdditionalInformationDetail </Role>
<ShortName> Prepaid Expenses and Other Current Assets - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 50 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R51.htm </HtmlFileName>
<LongName> 1051 - Disclosure - Assets Held For Sale -Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetsHeldForSaleAdditionalInformationDetail </Role>
<ShortName> Assets Held For Sale -Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 51 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R52.htm </HtmlFileName>
<LongName> 1052 - Disclosure - Property, Plant and Equipment, Net - Summary of Property Plant and Equipment (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/PropertyPlantAndEquipmentNetSummaryOfPropertyPlantAndEquipmentDetail </Role>
<ShortName> Property, Plant and Equipment, Net - Summary of Property Plant and Equipment (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 52 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R53.htm </HtmlFileName>
<LongName> 1053 - Disclosure - Property, Plant and Equipment, Net - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/PropertyPlantAndEquipmentNetAdditionalInformationDetail </Role>
<ShortName> Property, Plant and Equipment, Net - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 53 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R54.htm </HtmlFileName>
<LongName> 1054 - Disclosure - Goodwill And Intangible Assets, Net - Schedule of Intangible Assets (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/GoodwillAndIntangibleAssetsNetScheduleOfIntangibleAssetsDetail </Role>
<ShortName> Goodwill And Intangible Assets, Net - Schedule of Intangible Assets (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 54 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R55.htm </HtmlFileName>
<LongName> 1055 - Disclosure - Goodwill And Intangible Assets, Net - Schedule of Intangible Assets (Detail) (Parenthetical) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/GoodwillAndIntangibleAssetsNetScheduleOfIntangibleAssetsDetailParenthetical </Role>
<ShortName> Goodwill And Intangible Assets, Net - Schedule of Intangible Assets (Detail) (Parenthetical) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 55 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R56.htm </HtmlFileName>
<LongName> 1056 - Disclosure - Goodwill And Intangible Assets, Net - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/GoodwillAndIntangibleAssetsNetAdditionalInformationDetail </Role>
<ShortName> Goodwill And Intangible Assets, Net - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 56 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R57.htm </HtmlFileName>
<LongName> 1057 - Disclosure - Assets Retirement Obligations - Summary of Activity Associated with Asset Retirement Obligations (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AssetsRetirementObligationsSummaryOfActivityAssociatedWithAssetRetirementObligationsDetail </Role>
<ShortName> Assets Retirement Obligations - Summary of Activity Associated with Asset Retirement Obligations (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 57 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R58.htm </HtmlFileName>
<LongName> 1058 - Disclosure - Derivative Instruments - Summary of Realized and Unrealized Gains and Losses of Derivative Instrument (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DerivativeInstrumentsSummaryOfRealizedAndUnrealizedGainsAndLossesOfDerivativeInstrumentDetail </Role>
<ShortName> Derivative Instruments - Summary of Realized and Unrealized Gains and Losses of Derivative Instrument (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 58 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R59.htm </HtmlFileName>
<LongName> 1059 - Disclosure - Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/FairValueOfFinancialInstrumentsSummaryOfAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisDetail </Role>
<ShortName> Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 59 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R60.htm </HtmlFileName>
<LongName> 1060 - Disclosure - Accrued Liabilities - Summary of Accrued Liabilities (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/AccruedLiabilitiesSummaryOfAccruedLiabilitiesDetail </Role>
<ShortName> Accrued Liabilities - Summary of Accrued Liabilities (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 60 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R61.htm </HtmlFileName>
<LongName> 1061 - Disclosure - Debt - Summary of Company Debt (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DebtSummaryOfCompanyDebtDetail </Role>
<ShortName> Debt - Summary of Company Debt (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 61 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R62.htm </HtmlFileName>
<LongName> 1062 - Disclosure - Debt - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DebtAdditionalInformationDetail </Role>
<ShortName> Debt - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 62 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R63.htm </HtmlFileName>
<LongName> 1063 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail </Role>
<ShortName> Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 63 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R64.htm </HtmlFileName>
<LongName> 1064 - Disclosure - Income Taxes - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeTaxesAdditionalInformationDetail </Role>
<ShortName> Income Taxes - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 64 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R65.htm </HtmlFileName>
<LongName> 1065 - Disclosure - Share-Based Compensation - Summary of Fair Value of MRI EICP Options and Valuation Assumptions (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/ShareBasedCompensationSummaryOfFairValueOfMriEicpOptionsAndValuationAssumptionsDetail </Role>
<ShortName> Share-Based Compensation - Summary of Fair Value of MRI EICP Options and Valuation Assumptions (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 65 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R66.htm </HtmlFileName>
<LongName> 1066 - Disclosure - Share-Based Compensation - Summary of Outstanding Activity of Options,Restricted Stock and Restricted Stock Units under MRI EICP (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/ShareBasedCompensationSummaryOfOutstandingActivityOfOptionsRestrictedStockAndRestrictedStockUnitsUnderMriEicpDetail </Role>
<ShortName> Share-Based Compensation - Summary of Outstanding Activity of Options,Restricted Stock and Restricted Stock Units under MRI EICP (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 66 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R67.htm </HtmlFileName>
<LongName> 1067 - Disclosure - Share-Based Compensation - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/ShareBasedCompensationAdditionalInformationDetail </Role>
<ShortName> Share-Based Compensation - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 67 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R68.htm </HtmlFileName>
<LongName> 1068 - Disclosure - Defined Contribution Plan - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/DefinedContributionPlanAdditionalInformationDetail </Role>
<ShortName> Defined Contribution Plan - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 68 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R69.htm </HtmlFileName>
<LongName> 1069 - Disclosure - Related Party Transactions - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/RelatedPartyTransactionsAdditionalInformationDetail </Role>
<ShortName> Related Party Transactions - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 69 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R70.htm </HtmlFileName>
<LongName> 1070 - Disclosure - Segment Information - Summary of Reconciliation of the Company's Reportable Segments' Net Income from Continuing Operations (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SegmentInformationSummaryOfReconciliationOfTheCompanySReportableSegmentsNetIncomeFromContinuingOperationsDetail </Role>
<ShortName> Segment Information - Summary of Reconciliation of the Company's Reportable Segments' Net Income from Continuing Operations (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 70 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R71.htm </HtmlFileName>
<LongName> 1071 - Disclosure - Segment Information - Summary of Revenue by Major Customers (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/SegmentInformationSummaryOfRevenueByMajorCustomersDetail </Role>
<ShortName> Segment Information - Summary of Revenue by Major Customers (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 71 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R72.htm </HtmlFileName>
<LongName> 1072 - Disclosure - Leases - Summary of Supplemental Information Related To Operating Leases (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/LeasesSummaryOfSupplementalInformationRelatedToOperatingLeasesDetail </Role>
<ShortName> Leases - Summary of Supplemental Information Related To Operating Leases (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 72 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R73.htm </HtmlFileName>
<LongName> 1073 - Disclosure - Leases - Summary of Future Minimum Operating Lease Payments (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/LeasesSummaryOfFutureMinimumOperatingLeasePaymentsDetail </Role>
<ShortName> Leases - Summary of Future Minimum Operating Lease Payments (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 73 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R74.htm </HtmlFileName>
<LongName> 1074 - Disclosure - Leases - Summary of Supplemental Information Related To Finance Leases (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/LeasesSummaryOfSupplementalInformationRelatedToFinanceLeasesDetail </Role>
<ShortName> Leases - Summary of Supplemental Information Related To Finance Leases (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 74 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R75.htm </HtmlFileName>
<LongName> 1075 - Disclosure - Leases - Summary of Future Minimum Finance Lease Payments (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/LeasesSummaryOfFutureMinimumFinanceLeasePaymentsDetail </Role>
<ShortName> Leases - Summary of Future Minimum Finance Lease Payments (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 75 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R76.htm </HtmlFileName>
<LongName> 1076 - Disclosure - Income (loss) per share - Schedule of Loss Per Share, Basic and Diluted (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeLossPerShareScheduleOfLossPerShareBasicAndDilutedDetail </Role>
<ShortName> Income (loss) per share - Schedule of Loss Per Share, Basic and Diluted (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/IncomeTaxesTables </ParentRole>
<Position> 76 </Position>
</Report>
<Report instance="d364891d10q.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R77.htm </HtmlFileName>
<LongName> 1077 - Disclosure - Income (loss) per share - Additional Information (Detail) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.montaukenergy.com/role/IncomeLossPerShareAdditionalInformationDetail </Role>
<ShortName> Income (loss) per share - Additional Information (Detail) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.montaukenergy.com/role/IncomeTaxesTables </ParentRole>
<Position> 77 </Position>
</Report>
<Report>
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<LongName> All Reports </LongName>
<ReportType> Book </ReportType>
<ShortName> All Reports </ShortName>
</Report>
</MyReports>
<InputFiles>
<File doctype="10-Q" original="d364891d10q.htm"> d364891d10q.htm </File>
<File> d364891dex311.htm </File>
<File> d364891dex312.htm </File>
<File> d364891dex321.htm </File>
<File> d364891dex322.htm </File>
<File> mntk-20220630.xsd </File>
<File> mntk-20220630_cal.xml </File>
<File> mntk-20220630_def.xml </File>
<File> mntk-20220630_lab.xml </File>
<File> mntk-20220630_pre.xml </File>
</InputFiles>
<SupplementalFiles/>
<BaseTaxonomies>
<BaseTaxonomy items="937"> http://fasb.org/us-gaap/2022 </BaseTaxonomy>
<BaseTaxonomy items="31"> http://xbrl.sec.gov/dei/2022 </BaseTaxonomy>
</BaseTaxonomies>
<HasPresentationLinkbase> true </HasPresentationLinkbase>
<HasCalculationLinkbase> true </HasCalculationLinkbase>
</FilingSummary>

1 Previous Filing that this Filing References

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

 6/01/22  Montauk Renewables, Inc.          8-K:1,9     5/26/22   11:194K                                   Donnelley … Solutions/FA
↑Top
Filing Submission 0001193125-22-216242   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Tue., May 14, 12:17:10.1am ET