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Summary of Significant Accounting Policies - Summary of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities, Current [Abstract]
Accrued oil and gas property acquisition costs		$ 40,128
Accrued drilling costs	26,269crk_AccruedDrillingCosts	34,914crk_AccruedDrillingCosts
Accrued interest payable	9,011us-gaap_InterestPayableCurrent	7,051us-gaap_InterestPayableCurrent
Accrued rig termination fees	2,600crk_AccruedRigTerminationFees
Other	6,962us-gaap_OtherAccruedLiabilitiesCurrent	9,204us-gaap_OtherAccruedLiabilitiesCurrent
Total accrued expenses	$ 44,842us-gaap_AccruedLiabilitiesCurrent	$ 91,297us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details