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Derivative Financial Instruments - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative assets and liabilities offset in balance sheet $ 0cvbf_DerivativeAssetsLiabilitiesNetAmountOffsetInBalanceSheet    
Total notional amount of the Company's swaps 193,800,000us-gaap_DerivativeAssetNotionalAmount   197,400,000us-gaap_DerivativeAssetNotionalAmount
Gain recognized in the condensed consolidated statements of earnings $ 0us-gaap_DerivativeGainOnDerivative $ 0us-gaap_DerivativeGainOnDerivative  
Interest-rate swap agreements with customers [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Number of interest-rate swap agreements 75us-gaap_NumberOfInterestRateDerivativesHeld
/ us-gaap_DerivativeByNatureAxis
= cvbf_InterestRateSwapAgreementsWithCustomersMember