Premises and Equipment - Schedule of Premises and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Land	$ 8,425us-gaap_Land	$ 8,329us-gaap_Land
Bank premises	48,481us-gaap_BuildingsAndImprovementsGross	47,535us-gaap_BuildingsAndImprovementsGross
Furniture and equipment	39,272cvbf_FurnitureAndEquipment	39,502cvbf_FurnitureAndEquipment
Premises and equipment, gross	96,178us-gaap_PropertyPlantAndEquipmentGross	95,366us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization	(62,587)	(62,535)
Premises and equipment, net	$ 33,591us-gaap_PropertyPlantAndEquipmentNet	$ 32,831us-gaap_PropertyPlantAndEquipmentNet

Furniture and equipment.

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

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

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

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-Publisher FASB

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph (SX 210.5-02.13)

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