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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Significant Accounting Policies [Line Items] |  |  |
Transfer of securities from available-for-sale to held-to-maturity | $ 31,346 cvcy_AvailableforsaleSecuritiesTransferstoHeldtomaturity | $ 0 cvcy_AvailableforsaleSecuritiesTransferstoHeldtomaturity | $ 0 cvcy_AvailableforsaleSecuritiesTransferstoHeldtomaturity
Real Estate - owner-occupied percentage minimum for collateral | 50.00%cvcy_CommercialRealEstateOwnerOccupiedPercentageForCollateral |  |
Tax benefit from exercise of stock options | 7 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 17 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 26 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Amortization expense, intangible asset | $ 337 us-gaap_AmortizationOfIntangibleAssets | $ 268 us-gaap_AmortizationOfIntangibleAssets | $ 200 us-gaap_AmortizationOfIntangibleAssets
Minimum | Core deposits |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of intangible asset | 7 years |  |
Maximum | Core deposits |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of intangible asset | 10 years |  |
Premises | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of premises and equipment | 20 years |  |
Premises | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of premises and equipment | 40 years |  |
Leasehold improvements, furniture, fixtures and equipment | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of premises and equipment | 3 years |  |
Leasehold improvements, furniture, fixtures and equipment | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of premises and equipment | 10 years |  |

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- Definition Available-for-sale Securities, Transfers to Held-to-maturity + References No definition available. + Details
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- Definition Commercial Real Estate Owner Occupied Percentage For Collateral + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=32706628&loc=d3e11374-113907 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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