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Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Outstanding Recorded Investment	$ 6,361,000us-gaap_FinancingReceivableModificationsRecordedInvestment		$ 6,600,000us-gaap_FinancingReceivableModificationsRecordedInvestment
Reserves specific to modified loans	32,000cvcy_FinancingReceivableModificationsRelatedAllowance		132,000cvcy_FinancingReceivableModificationsRelatedAllowance
Defaults on troubled debt restructurings	0cvcy_FinancingReceivableModificationsSubsequentDefaultsDuringPeriodNumberOfContracts	0cvcy_FinancingReceivableModificationsSubsequentDefaultsDuringPeriodNumberOfContracts
Loans and Leases Receivable, Impaired, Commitment to Lend	0us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans	2us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Pre-Modification Outstanding Recorded Investment	42,000us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Principal Modification	0cvcy_FinancingReceivableModificationsAmountOfPrincipalModificationsMadeDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Post Modification Outstanding Recorded Investment	42,000us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember
Outstanding Recorded Investment	$ 42,000us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cvcy_CommercialAndIndustrialMember

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- Definition

Financing Receivable, Modifications, Amount of Principal Modifications Made During Period

+ References

No definition available.

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- Definition

Financing Receivable, Modifications, Related Allowance

+ References

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- Definition

Financing Receivable, Modifications, Subsequent Defaults During Period, Number of Contracts

+ References

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

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