Annual report pursuant to Section 13 and 15(d)

Borrowings (Schedule of Borrowings) (Details)

v2.4.1.9
Borrowings (Schedule of Borrowings) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Principal components:    
Senior secured revolving credit facility $ 35,000us-gaap_LongTermLineOfCredit $ 22,000us-gaap_LongTermLineOfCredit
Principal Components 335,000us-gaap_DebtInstrumentCarryingAmount 70,481us-gaap_DebtInstrumentCarryingAmount
Non-cash components:    
Total carrying value of borrowings 335,000us-gaap_LongTermDebt 75,748us-gaap_LongTermDebt
Senior Secured Revolving Credit Facility [Member]    
Principal components:    
Senior secured revolving credit facility 35,000us-gaap_LongTermLineOfCredit
/ us-gaap_DebtInstrumentAxis
= cpe_SeniorSecuredRevolvingCreditFacilityMember
22,000us-gaap_LongTermLineOfCredit
/ us-gaap_DebtInstrumentAxis
= cpe_SeniorSecuredRevolvingCreditFacilityMember
Secured second lien term loan [Member]    
Principal components:    
Principal Components 300,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= cpe_SecondLienTermLoanFacilityMember
 
13% Senior Notes due 2016 [Member]    
Principal components:    
Principal Components   48,481us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= cpe_Senior13PercentNotesDue2016Member
Non-cash components:    
Deferred credit   $ 5,267us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
/ us-gaap_DebtInstrumentAxis
= cpe_Senior13PercentNotesDue2016Member