SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Weighted Average Shares of Unvested Restricted Stock (Detail) - shares shares in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Accounting Policies [Abstract]
Unvested restricted stock (in shares)	2,057	2,342	2,151	2,330

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

No definition available.

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