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Goodwill and Other Intangible Assets - Summary of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |
Balance of intangible assets, Gross CDI Carrying Amount, Beginning of period | $ 31,999 us-gaap_FiniteLivedIntangibleAssetsGross | $ 31,999 us-gaap_FiniteLivedIntangibleAssetsGross |
Additions due to acquisitions | 2,090 us-gaap_FinitelivedIntangibleAssetsAcquired1 | 0 us-gaap_FinitelivedIntangibleAssetsAcquired1 |
Balance of intangible assets, Gross CDI Carrying Amount, End of period | 34,089 us-gaap_FiniteLivedIntangibleAssetsGross | 31,999 us-gaap_FiniteLivedIntangibleAssetsGross | 31,999 us-gaap_FiniteLivedIntangibleAssetsGross
Aggregate amortization expense, Gross CDI Carrying Amount | 1,137 us-gaap_AmortizationOfIntangibleAssets | 1,127 us-gaap_AmortizationOfIntangibleAssets | 2,159 us-gaap_AmortizationOfIntangibleAssets
Estimated Amortization Expense, 2015 | 949 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths |  |
Estimated Amortization Expense, 2016 | 737 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |  |
Estimated Amortization Expense, 2017 | 631 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |  |
Estimated Amortization Expense, 2018 | 562 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |  |
Estimated Amortization Expense, 2019 | 335 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |  |
Estimated Amortization Expense, Thereafter | 0 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive |  |
Balance of intangible assets, Accumulated Amortization, Beginning of period | (29,738)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (28,610)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |
Amortizing intangible assets, Accumulated Amortization, End of period | (30,875)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (29,738)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (28,610)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Balance of intangible assets, Net CDI Amount, Beginning of period | 2,261 cvbf_FiniteAndIndefiniteLivedIntangibleAssetsNetBeginningBalance | 3,389 cvbf_FiniteAndIndefiniteLivedIntangibleAssetsNetBeginningBalance |
Balance of intangible assets, Net CDI Amount, End of period | $ 3,214 cvbf_FiniteAndIndefiniteLivedIntangibleAssetsNetEndingBalance | $ 2,261 cvbf_FiniteAndIndefiniteLivedIntangibleAssetsNetEndingBalance |

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- Definition Finite And Indefinite Lived Intangible Assets Net Beginning Balance + References No definition available. + Details
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- Definition Finite And Indefinite Lived Intangible Assets Net Ending Balance + 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 Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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