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Borrowing Arrangements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Borrowing Arrangements    
Available-for-sale investment securities $ 427,811us-gaap_AvailableForSaleSecurities $ 432,535us-gaap_AvailableForSaleSecurities
San Fransisco Branch    
Borrowing Arrangements    
Advances from FHLB 0us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch
/ us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis
= cvcy_SanFransiscoBranchMember
 
Federal Home Loan Bank Advances [Member] | Securities Pledged as Collateral    
Borrowing Arrangements    
Investments securing FHLB advances, amortized cost 1,078us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
/ us-gaap_CounterpartyNameAxis
= us-gaap_FederalHomeLoanBankAdvancesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_SecuritiesPledgedAsCollateralMember
1,256us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
/ us-gaap_CounterpartyNameAxis
= us-gaap_FederalHomeLoanBankAdvancesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_SecuritiesPledgedAsCollateralMember
Estimated Fair Value $ 1,182us-gaap_AvailableForSaleSecuritiesDebtSecurities
/ us-gaap_CounterpartyNameAxis
= us-gaap_FederalHomeLoanBankAdvancesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_SecuritiesPledgedAsCollateralMember
$ 1,364us-gaap_AvailableForSaleSecuritiesDebtSecurities
/ us-gaap_CounterpartyNameAxis
= us-gaap_FederalHomeLoanBankAdvancesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_SecuritiesPledgedAsCollateralMember