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SUBSEQUENT EVENTS (Details) - C P B Capital Trust I I I [Member] - USD ($) |  | 1 Months Ended
--- | --- | ---
Oct. 24, 2018 | Oct. 31, 2003
Subsequent Event [Line Items] |  |
Common Securities Issued to Parent Value |  | $ 600,000.0
Subsequent Event |  |
Subsequent Event [Line Items] |  |
Trust Preferred Securities Redeemed Value | $ 20,000,000 |
Common Securities Issued to Parent Value | $ 600,000 |

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- Definition The value of common securities issued to the parent during the period. + References No definition available. + Details
Name: | cpf_CommonSecuritiesIssuedToParentValue
Namespace Prefix: | cpf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The value of trust preferred securities redeemed during the period. + References No definition available. + Details
Name: | cpf_TrustPreferredSecuritiesRedeemedValue
Namespace Prefix: | cpf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=cpf_CPBCapitalTrustIIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |