XML 39 R27.htm IDEA: XBRL DOCUMENT v3.21.2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -Share Based Compensation (Details) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) $ / shares $ / EquityUnit shares	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) $ / shares $ / EquityUnit shares	Sep. 30, 2020 USD ($)	Dec. 31, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation | $			$ 5,291	$ 4,734
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of unvested restricted stock outstanding (in shares) | shares	952,971		952,971		1,038,006
Weighted average grant date fair value of stock grants per share (in dollars per share) | $ / shares	$ 5.74		$ 5.74
Unrecognized compensation cost related to unvested restricted stock | $	$ 4,700		$ 4,700
Period in which compensation cost expected to be recognized			1 year 10 months 24 days
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period in which compensation cost expected to be recognized			1 year 9 months 18 days
Number of performance stock units ("PSUs") outstanding (in shares) | shares	1,049,910		1,049,910
Weighted average grant date fair value of PSUs per unit (in dollars per share) | $ / EquityUnit	8.11		8.11
Minimum final number of shares of common stock issuable based on performance multiplier (in shares) | shares			0
Maximum final number of shares of common stock issuable based on performance multiplier (in shares) | shares			2,099,820
Unrecognized expense, performance share units | $			$ 4,200
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation | $	$ 1,800	$ 1,800	$ 5,300	$ 4,700

X

- Definition

Final Number Of Potential Performance Shares Issuable Maximum.

+ References

No definition available.

+ Details

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

X

- Definition

Final Number Of Potential Performance Shares Issuable Minimum.

+ References

No definition available.

+ Details

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

X

- Definition

Number of performance share units outstanding.

+ References

No definition available.

+ Details

Name:	crk_NumberOfPerformanceShareUnitsOutstanding
Namespace Prefix:	crk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Performance share units outstanding weighted average grant date fair value.

+ References

No definition available.

+ Details

Name:	crk_PerformanceShareUnitsOutstandingWeightedAverageGrantDateFairValue
Namespace Prefix:	crk_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Share based compensation arrangement by share based payment award equity instruments other than options unrecognized compensation cost.

+ References

No definition available.

+ Details

Name:	crk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnrecognizedCompensationCost
Namespace Prefix:	crk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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

X

- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- 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

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: