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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Description of Business) (Details) | 12 Months Ended
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Dec. 31, 2019 branch segment machine
SEGMENT INFORMATION |
Number of reportable segments | segment | 3
Central Bank |
SEGMENT INFORMATION |
Number of branches | branch | 35
Number of ATMs | machine | 77

X
- Definition Represents the number of automated teller machines of the entity. + References No definition available. + Details
Name: | cpf_NumberOfAutomatedTellerMachines
Namespace Prefix: | cpf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of branches of the entity. + References No definition available. + Details
Name: | cpf_NumberOfBranches
Namespace Prefix: | cpf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |