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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Allowance for Loan and Lease Losses) (Details) | 12 Months Ended
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Dec. 31, 2018 method subsector
Accounting Policies [Abstract] |
Number of evaluation methods of loan and lease Allowance | method | 3
Number of homogeneous subsectors in the loan portfolio | subsector | 11

X
- Definition Represents the number of homogeneous subsectors in the loan portfolio of the entity. + References No definition available. + Details
Name: | cpf_LoanPortfolioNumberOfHomogeneousSubsectors
Namespace Prefix: | cpf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents number of methods for evaluating the allowance for loan and lease losses. + References No definition available. + Details
Name: | cpf_NumberOfEvaluationMethodsOfLoanAndLeaseAllowance
Namespace Prefix: | cpf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration