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Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Loans	Dec. 31, 2013 Loans
Financing Receivable, Modifications [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	$ 0us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	$ 2,465us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet
Financing Receivable, Modifications, Recorded Investment	6,600us-gaap_FinancingReceivableModificationsRecordedInvestment	10,366us-gaap_FinancingReceivableModificationsRecordedInvestment
Reserves specific to modified loans	132cvcy_FinancingReceivableModificationsRelatedAllowance	946cvcy_FinancingReceivableModificationsRelatedAllowance
Additional commitments to lend	0us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Number of Loans	2cvcy_FinancingReceivableModificationsNumerOfContractsModifiedDuringPeriod
Pre-Modification Outstanding Recorded Investment	32cvcy_FinancingReceivableModificationsPreModificationRecordedInvestmentOfLoansModifiedDuringPeriod
Principal Modification	0cvcy_FinancingReceivableModificationsAmountOfPrincipalModificationsMadeDuringPeriod
Post Modification Outstanding Recorded Investment	32cvcy_FinancingReceivableModificationsPostModificationRecordedInvestmentOfLoansModifiedDuringPeriod
Outstanding Recorded Investment	29cvcy_FinancingReceivableModificationsOutstandingRecordedInvestmentOfLoansModifiedDuringPeriod
Defaults on troubled debt restructurings	0cvcy_FinancingReceivableModificationsSubsequentDefaultsDuringPeriodNumberOfContracts	0cvcy_FinancingReceivableModificationsSubsequentDefaultsDuringPeriodNumberOfContracts
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	25us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Principal Modification	0cvcy_FinancingReceivableModificationsAmountOfPrincipalModificationsMadeDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Financing Receivable, Modifications, Post-Modification Recorded Investment	25us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Financing Receivable, Modifications, Number of Contracts	1us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Financing Receivable, Modifications, Pre-Modification Recorded Investment	25us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans		1cvcy_FinancingReceivableModificationsNumerOfContractsModifiedDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateMember
Pre-Modification Outstanding Recorded Investment		620cvcy_FinancingReceivableModificationsPreModificationRecordedInvestmentOfLoansModifiedDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateMember
Principal Modification		0cvcy_FinancingReceivableModificationsAmountOfPrincipalModificationsMadeDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateMember
Post Modification Outstanding Recorded Investment		620cvcy_FinancingReceivableModificationsPostModificationRecordedInvestmentOfLoansModifiedDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateMember
Outstanding Recorded Investment		344cvcy_FinancingReceivableModificationsOutstandingRecordedInvestmentOfLoansModifiedDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateMember
Equity loans and lines of credit
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_EquityLoansAndLinesOfCreditMember
Principal Modification	0cvcy_FinancingReceivableModificationsAmountOfPrincipalModificationsMadeDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_EquityLoansAndLinesOfCreditMember
Financing Receivable, Modifications, Post-Modification Recorded Investment	7us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_EquityLoansAndLinesOfCreditMember
Financing Receivable, Modifications, Number of Contracts	1us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_EquityLoansAndLinesOfCreditMember
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 7us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_EquityLoansAndLinesOfCreditMember

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Financing Receivable, Modifications, Related Allowance

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The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 15

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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