Derivative, Average Sub-Floor Price

No definition available.

Name:	crzo_DerivativeAverageSubFloorPrice
Namespace Prefix:	crzo_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageCapPrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageFloorPrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

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

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_SwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	crzo_DerivativePositionPeriodAxis=crzo_DerivativePositionsQ32017Domain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_EnergyAxis=us-gaap_CrudeOilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	crzo_DerivativePositionPeriodAxis=crzo_DerivativePositionsQ42017Domain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=crzo_ThreewayCollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	crzo_DerivativePositionPeriodAxis=crzo_DerivativePositionsYearTwoThousandEighteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events, Derivative Instruments (Schedule of Crude Oil Derivative Positions) (Details) - Crude Oil [Member]	Apr. 10, 2017 bbl / d $ / bbls	Apr. 07, 2017 bbl / d $ / bbls	Mar. 31, 2017 bbl / d $ / bbls
Swaps [Member] \| Q3 2017 [Domain]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| bbl / d			6,000
Weighted Average Floor Price ($/Bbls)			54.15
Swaps [Member] \| Q4 2017 [Domain]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| bbl / d			3,000
Weighted Average Floor Price ($/Bbls)			55.01
Subsequent Event [Member] \| Swaps [Member] \| Q3 2017 [Domain]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| bbl / d		6,000
Weighted Average Floor Price ($/Bbls)		53.28
Subsequent Event [Member] \| Swaps [Member] \| Q4 2017 [Domain]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| bbl / d		6,000
Weighted Average Floor Price ($/Bbls)		53.28
Subsequent Event [Member] \| Three-way Collars [Member] \| FY 2018 [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| bbl / d	6,000
Weighted Average Sub-Floor Price ($/Bbls)	40.00
Weighted Average Floor Price ($/Bbls)	50.00
Weighted Average Ceiling Price ($/Bbls)	65.00