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Basis of Presentation - Narrative (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 USD ($)
Accounting Policies [Abstract] |
Recognition of excess tax benefit | $ 92

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- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount + References No definition available. + Details
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Namespace Prefix: | cvcy_
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Balance Type: | credit
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration