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EQUITY (Details) (USD $) | 0 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 18, 2011 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 06, 2013 | Feb. 18, 2011 | Feb. 28, 2011 | Dec. 31, 2011 | Jan. 29, 2014 | Feb. 02, 2011 | Apr. 07, 2014 | Mar. 21, 2014 | Feb. 20, 2014 | Feb. 21, 2014 | Nov. 23, 2010 | Apr. 04, 2012 | Jun. 22, 2011 | May 20, 2014 | Jan. 31, 2008 | May 06, 2011 | Feb. 17, 2011 | Jun. 30, 2013
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from private placement offering | $ 325,000,000 us-gaap_ProceedsFromIssuanceOfPrivatePlacement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other noninterest expense |  | 18,886,000 us-gaap_OtherNoninterestExpense | 17,927,000 us-gaap_OtherNoninterestExpense | 20,307,000 us-gaap_OtherNoninterestExpense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For ownership change to occur, the minimum cumulative increase in the entity's ownership by "5-percent shareholders" over a rolling three-year period (as a percent) |  | 50.00%cpf_MinimumCumulativeIncreaseInFivePercentShareholdersInRollingThreeYearPeriodForOwnershipChangeToOccur |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-cash increase in net income available to common shareholders due to TARP Exchange |  |  | 1,895,000 us-gaap_PreferredStockRedemptionPremium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in fair value recorded in noninterest income |  | 3,547,000 cpf_OtherNoninterestIncome | 3,249,000 cpf_OtherNoninterestIncome | 4,611,000 cpf_OtherNoninterestIncome |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends declared (in dollars per share) |  | $ 0.36 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.16 us-gaap_CommonStockDividendsPerShareDeclared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares repurchased or acquired through tender offer |  | 7,045,620 us-gaap_StockRepurchasedDuringPeriodShares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, outstanding shares |  | 35,233,674 us-gaap_CommonStockSharesOutstanding | 42,107,633 us-gaap_CommonStockSharesOutstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares repurchased |  | 0 cpf_StockRepurchaseProgramNumberOfSharesRepurchased |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
TARP Warrant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accepted bid amount of warrant |  |  |  |  | 800,000 cpf_ClassOfWarrantAcceptedBidAmount / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liability |  |  |  | 800,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other noninterest expense |  |  | 100,000 us-gaap_OtherNoninterestExpense / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember | 100,000 us-gaap_OtherNoninterestExpense / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-cash increase in net income available to common shareholders due to TARP Exchange |  |  |  |  |  |  | 85,100,000 us-gaap_PreferredStockRedemptionPremium / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in fair value recorded in noninterest income |  |  |  |  |  |  |  | 1,000,000 cpf_OtherNoninterestIncome / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial value attributed to the warrant | 1,700,000 us-gaap_WarrantsNotSettleableInCashFairValueDisclosure / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  | 1,700,000 us-gaap_WarrantsNotSettleableInCashFairValueDisclosure / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assumptions used in estimating fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Volatility (as a percent) |  |  |  |  |  | 67.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free rate (as a percent) |  |  |  |  |  | 3.59%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yield (as a percent) |  |  |  |  |  | 1.45%us-gaap_FairValueAssumptionsExpectedDividendRate / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated life |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional extension period of Tax Benefits Preservation Plan |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split conversion ratio |  |  |  |  |  |  |  |  |  | 0.05 us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |
Shares authorized under the 2008 Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000 us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Shares remaining available for repurchase |  |  | 55,000 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount authorized under the 2014 Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Number of shares repurchased |  | 857,554 cpf_StockRepurchaseProgramNumberOfSharesRepurchased / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchased amount |  | 16,500,000 us-gaap_StockRepurchasedAndRetiredDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining amount available for repurchase |  | 13,500,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | Repurchase Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  | 125,000,000 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |  |
Tender offer price (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 20.20 cpf_TenderOfferPricePerShare / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |
Number of shares of common stock properly tendered and not withdrawn at or below the purchase price |  |  |  |  |  |  |  |  |  |  |  | 3,369,850 cpf_NumberOfSharesOfCommonStockProperlyTenderedAndNotWithdrawnAtOrBelowPurchasePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |
Number of shares of common stock tendered through notice of guaranteed delivery at or below the purchase price |  |  |  |  |  |  |  |  |  |  |  | 167,572 cpf_NumberOfSharesOfCommonStockTenderedThroughNoticeOfGuaranteedDeliveryAtOrBelowPurchasePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |
Number of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  | 6,188,066 us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember | 3,405,888 us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |
Share repurchase percentage of common stock properly tendered and not withdrawn at or below the purchase price |  |  |  |  |  |  |  |  |  |  |  | 96.60%cpf_SharesRepurchasedAsPercentageOfSharesOfCommonStockProperlyTenderedAndNotWithdrawnAtOrBelowPurchasePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |
Share repurchase percentage of issued and outstanding shares of common stock prior to the completion of the tender offer and the private repurchases |  |  |  |  |  |  |  |  |  |  | 14.70%cpf_SharesRepurchasedAsPercentageOfIssuedAndOutstandingShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |  |
Common stock, outstanding shares |  |  |  |  |  |  |  |  |  |  | 35,900,000 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |  |  |
Common Stock | Repurchase Agreements | Lead Investors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  |  |  | 56,200,000 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_CounterpartyNameAxis = cpf_LeadInvestorsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Percentage of shares of common stock held by investors |  |  |  |  |  |  |  |  |  |  |  |  | 44.90%cpf_PercentageOfSharesOfCommonStockHeldByLeadInvestors / us-gaap_CounterpartyNameAxis = cpf_LeadInvestorsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Common Stock | Repurchase Agreements | Carlyle |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  |  |  | 28,100,000 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_CounterpartyNameAxis = cpf_CarlyleFinancialServicesHarborLPMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Number of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  |  |  | 1,391,089 us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_CounterpartyNameAxis = cpf_CarlyleFinancialServicesHarborLPMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Percentage of shares of common stock held by investors |  |  |  |  |  |  |  |  |  |  |  |  | 22.50%cpf_PercentageOfSharesOfCommonStockHeldByLeadInvestors / us-gaap_CounterpartyNameAxis = cpf_CarlyleFinancialServicesHarborLPMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Number of shares of common stock held by investors |  |  |  |  |  |  |  |  |  |  |  |  | 9,463,095 cpf_NumberOfSharesOfCommonStockHeldByLeadInvestors / us-gaap_CounterpartyNameAxis = cpf_CarlyleFinancialServicesHarborLPMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Common Stock | Repurchase Agreements | Anchorage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  |  |  | 1,391,089 us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_CounterpartyNameAxis = cpf_ACMOCPFLLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Percentage of shares of common stock held by investors |  |  |  |  |  |  |  |  |  |  |  |  | 22.50%cpf_PercentageOfSharesOfCommonStockHeldByLeadInvestors / us-gaap_CounterpartyNameAxis = cpf_ACMOCPFLLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Number of shares of common stock held by investors |  |  |  |  |  |  |  |  |  |  |  |  | 9,463,095 cpf_NumberOfSharesOfCommonStockHeldByLeadInvestors / us-gaap_CounterpartyNameAxis = cpf_ACMOCPFLLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Common Stock | Minimum | Repurchase Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tender offer price (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18.50 cpf_TenderOfferPricePerShare / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |
Common Stock | Maximum | Repurchase Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  |  |  |  | 68,800,000 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |
Tender offer price (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21.00 cpf_TenderOfferPricePerShare / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |
Common Stock | Maximum | Repurchase Agreements | Anchorage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares repurchased or acquired through tender offer |  |  |  |  |  |  |  |  |  |  |  |  | 28,100,000 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_CounterpartyNameAxis = cpf_ACMOCPFLLCMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_TypeOfArrangementAxis = us-gaap_RepurchaseAgreementsMember |  |  |  |  |  |  |  |  |
Common Stock | Rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrant (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_RightsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 10 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_RightsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
Value of Rights Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 us-gaap_WarrantsAndRightsOutstanding / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_RightsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Junior Participating Preferred Stock, Series C | Rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrant (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.00 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_RightsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_SeriesCPreferredStockMember |  |  |  |  |  |  |
Fraction of securities callable by each warrant or right |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0001 cpf_ClassOfWarrantOrRightFractionOfSecuritiesCallableByEachWarrantOrRight / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_RightsMember / us-gaap_StatementEquityComponentsAxis = us-gaap_SeriesCPreferredStockMember |  |  |  |  |  |  |
Treasury | TARP Warrant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrant (in dollars per share) | $ 10 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember |  |  |  |  | $ 10 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 255.40 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember |
Treasury | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares exchanged |  |  |  |  |  | 135,000 cpf_SaleOfStockByThirdParty / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares exchanged |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,770,117 cpf_SaleOfStockByThirdParty / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 2,850,000 cpf_SaleOfStockByThirdParty / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Common stock issued in exchange for preferred stock and accrued and unpaid dividends (in shares) |  |  |  |  |  | 5,620,117 cpf_CommonStockIssuedInExchangeForPreferredStockAndAccruedAndUnpaidDividends / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury | Common Stock | TARP Warrant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated fair value of the common stock issued |  |  |  |  |  | 56,200,000 cpf_CommonStockIssuedInExchangeForPreferredStockAndAccruedUnpaidDividends / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury | Common Stock | TARP Warrant | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares that can be purchased upon exercise of warrants or rights | 79,288 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  | 79,288 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 79,288 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember / dei_LegalEntityAxis = cpf_UnitedStatesDepartmentOfTreasuryMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Central Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statutory Retained Earnings |  | $ 123,800,000 cpf_StatutoryRetainedEarnings / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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