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Covered Assets and FDIC Loss Sharing Asset - Summary of Covered Loans by Internal Risk Ratings (Detail) (Covered Loans [Member], USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total covered gross loans | $ 156,466 | $ 173,104
Pass [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total covered gross loans | 35,744 | 38,961
Watch List [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total covered gross loans | 67,079 | 74,369
Special Mention [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total covered gross loans | 15,411 | 15,492
Substandard [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total covered gross loans | 38,193 | 44,241
Doubtful & Loss [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total covered gross loans | $ 39 | $ 41

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- Definition Reflects the aggregate gross carrying amount of loans and leases held in the portfolio that are covered by loss sharing agreements with the FDIC. + References No definition available. + Details
Name: | cvbf_GrossCoveredLoans
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration