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INCOME AND FRANCHISE TAXES (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Tax credit carryforwards  
Expiration period of tax credit carryforwards 20 years
State  
Tax credit carryforwards  
Tax credit carryforwards that do not expire 14.8cpf_TaxCreditCarryforwardsNotSubjectToExpiration
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Federal  
Tax credit carryforwards  
Tax credit carryforwards 16.6us-gaap_TaxCreditCarryforwardAmount
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= us-gaap_InternalRevenueServiceIRSMember
Tax credit carryforwards that expire 13.7cpf_TaxCreditCarryforwardsSubjectToExpiration
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= us-gaap_InternalRevenueServiceIRSMember
Tax credit carryforwards that do not expire 2.9cpf_TaxCreditCarryforwardsNotSubjectToExpiration
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= us-gaap_InternalRevenueServiceIRSMember