Expected future payments for short term leased drilling services.

No definition available.

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Namespace Prefix:	crk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee, operating lease, number of contract.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Prior advance notice period for cancellation of rig contracts.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-5

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-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow from operating lease to bring another asset to condition and location necessary for its intended use.

+ References

+ Details

Name:	us-gaap_OperatingLeasePaymentsUse
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
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-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
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-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

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+ Details

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Data Type:	xbrli:durationItemType
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Period Type:	instant

- Details

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- Details

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Data Type:	na
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- Details

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leases (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) Contract	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease, right-of-use assets	$ 96,456		$ 96,456		$ 94,733
Cash payments for operating leases associated with right-of-use assets	1,000	$ 1,100	3,000	$ 3,000
Cash payments for operating leases associated with ROU assets used for investing activities	$ 28,600	$ 24,300	$ 93,900	$ 65,100
Operating lease, weighted average remaining lease term	2 years 8 months 12 days		2 years 8 months 12 days		2 years 4 months 24 days
Operating lease, weighted average discount rate, percent	6.50%		6.50%		6.80%
Expected future payments for short term leased drilling services	$ 12,700		$ 12,700
Minimum
Lessee, Lease, Description [Line Items]
Prior advance notice period for cancellation of rig contracts			30 days
Maximum
Lessee, Lease, Description [Line Items]
Prior advance notice period for cancellation of rig contracts			45 days
Drilling Rig Contract
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	3 years		3 years
Operating lease, number of contract \| Contract			4