Stockholders' Equity - Additional Information (Detail)	3 Months Ended
Mar. 31, 2018 shares
Predecessor
Stockholders Equity [Line Items]
Common stock warrants exercised, Shares	260,047

Stock and warrants exercised during period shares preferred stock and warrants.

No definition available.

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Namespace Prefix:	crk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration