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Acquisitions and Dispositions of Oil and Gas Properties - Results of Operations for Properties (Detail) $ in Thousands	7 Months Ended
	Aug. 13, 2018 USD ($)
Business Combinations [Abstract]
Total oil and gas sales	$ 17,747
Total operating expenses	(6,134)
Operating income	$ 11,613

X

- Definition

Oil and gas properties sold oil and gas sales.

+ References

No definition available.

+ Details

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X

- Definition

Oil and gas properties sold operating expenses.

+ References

No definition available.

+ Details

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X

- Definition

Oil and gas properties sold operating income loss.

+ References

No definition available.

+ Details

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Namespace Prefix:	crk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- References

No definition available.

+ Details

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