SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Weighted Average Shares of Unvested Restricted Stock (Detail) - shares shares in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Accounting Policies [Abstract]
Unvested restricted stock (in shares)	2,017	960

Share based compensation arrangement by share based payment award equity instruments other than option nonvested weighted average number.

No definition available.

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