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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, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accounting Policies [Abstract]
Unvested restricted stock (in shares)	1,124	905	1,042	926

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- Definition

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

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration