Quarterly report pursuant to Section 13 or 15(d)

Acquistions (Narrative) (Details)

v2.4.1.9
Acquistions (Narrative) (Details) (Central Midland Basin [Member], USD $)
In Thousands, unless otherwise specified
0 Months Ended
Oct. 08, 2014
Oct. 08, 2014
Central Midland Basin [Member]
   
Business Acquisition [Line Items]    
Aggregate cash purchase price $ 210,205us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= cpe_CentralMidlandBasinMember
$ 210,205us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= cpe_CentralMidlandBasinMember
Working interest 62.00%cpe_GasAndOilAreaWorkingInterest
/ us-gaap_BusinessAcquisitionAxis
= cpe_CentralMidlandBasinMember
 
Net revenue interest 46.50%cpe_GasAndOilAreaNetRevenueInterest
/ us-gaap_BusinessAcquisitionAxis
= cpe_CentralMidlandBasinMember
 
Equity offering $ 122,450us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
/ us-gaap_BusinessAcquisitionAxis
= cpe_CentralMidlandBasinMember