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cm:Level3TextBlock: us-gaap:ScheduleOfAmortizationExpensePerUnitOfProductionTextBlock
Standard label: Schedule of Amortization Expense Per Unit of Production [Table Text Block]
Name: us-gaap:ScheduleOfAmortizationExpensePerUnitOfProductionTextBlock
Documentation: Tabular disclosure of amortization expense per unit of production for oil and gas enterprises that follow the full cost method of accounting for investments in oil and gas properties.
Object type: cm:Level3TextBlock
Data type: Text Block (HTML) (nonnum:textBlockItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ScheduleOfAmortizationExpensePerUnitOfProductionTextBlock

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Labels
Label Role Language
Schedule of Amortization Expense Per Unit of Production [Table Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 932 10 S99 1 (SX 210.4-10.(c)(7)(i)) http://fasb.org/us-gaap/role/ref/legacyRef 932