LOANS AND CREDIT QUALITY(Forbearance or Deferrals) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($) loan	Dec. 31, 2019 USD ($)
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	3,813
Balance	$ 290,841
Accrued Interest Receivable	4,439
Loans	5,030,626	$ 4,449,540
Total Loans, excl. PPP	$ 4,502,045
% of Total Loans	5.80%
% of Total Loans, excl. PPP	0.065
Commercial Financial And Agricultural
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loans		570,304
Commercial Financial And Agricultural \| Commercial Financial And Agricultural
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	363
Balance	$ 64,298
Accrued Interest Receivable	844
Loans	$ 1,056,651
% of Total Loans	6.10%
Commercial Financial And Agricultural \| Other
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loans	$ 528,070
% of Total Loans, excl. PPP	0.122
Real Estate \| Construction
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	0
Balance	$ 0
Accrued Interest Receivable	0
Loans	$ 118,247	95,854
% of Total Loans	0.00%
% of Total Loans, excl. PPP	0
Real Estate \| Residential Mortgage
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	216
Balance	$ 103,130
Accrued Interest Receivable	1,803
Loans	$ 1,680,060	1,599,801
% of Total Loans	6.10%
% of Total Loans, excl. PPP	0.061
Real Estate \| Home Equity
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	0
Balance	$ 0
Accrued Interest Receivable	0
Loans	$ 534,056	490,734
% of Total Loans	0.00%
% of Total Loans, excl. PPP	0
Real Estate \| Commercial Mortgage
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	25
Balance	$ 69,420
Accrued Interest Receivable	469
Loans	$ 1,141,265	1,123,415
% of Total Loans	6.10%
% of Total Loans, excl. PPP	0.061
Consumer Portfolio Segment [Member] \| Consumer
ALLOWANCE FOR LOAN AND LEASE LOSSES
Loan Count \| loan	3,209
Balance	$ 53,993
Accrued Interest Receivable	1,323
Loans	$ 500,347	$ 569,432
% of Total Loans	10.80%
% of Total Loans, excl. PPP	0.108

Concentration Risk, Percentage, Excluding PPP Loans

No definition available.

Name:	cpf_ConcentrationRiskPercentageExcludingPPPLoans
Namespace Prefix:	cpf_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Deferrals, Amount

+ References

No definition available.

+ Details

Name:	cpf_DebtInstrumentDeferralsAmount
Namespace Prefix:	cpf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Financing Receivable, Accrued Interest Receivable

+ References

No definition available.

+ Details

Name:	cpf_FinancingReceivableAccruedInterestReceivable
Namespace Prefix:	cpf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Financing Receivable, Number Of Loans

+ References

No definition available.

+ Details

Name:	cpf_FinancingReceivableNumberOfLoans
Namespace Prefix:	cpf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Loans and Leases Receivable, Net of Deferred Income, Excluding PPP Loans

+ References

No definition available.

+ Details

Name:	cpf_LoansAndLeasesReceivableNetOfDeferredIncomeExcludingPPPLoans
Namespace Prefix:	cpf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524

+ Details

Name:	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cpf_CommercialFinancialAndAgriculturalPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cpf_CommercialFinancialAndAgriculturalPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cpf_CommercialFinancialAndAgriculturalOtherPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cpf_RealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cpf_ResidentialRealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cpf_CommercialRealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cpf_OtherLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: