Name:	crzo_SharebasedCompensationArrangementbySharebasedPaymentAwardNonOptionEquityInstrumentsUnearnedSharesduetoMarketCondition
Namespace Prefix:	crzo_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Upon grant the target number of shares to be vest at the end of the performance period. The target will be adjusted by the multiplier at the end of the performance period to determine the number of vested performance shares.

No definition available.

Name:	crzo_SharebasedCompensationArrangementsbyShareBasedPaymentAwardTargetShares
Namespace Prefix:	crzo_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The vesting percentage of target performance shares granted as a result of the Company's final TSR ranking relative to the specified industry peer group.

No definition available.

Name:	crzo_VestingPercentageOfTargetPerformanceSharesGranted
Namespace Prefix:	crzo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

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

Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

No definition available.