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.

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Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2008	Dec. 31, 2014
Goodwill and Intangible Assets
Goodwill	$ 29,917us-gaap_Goodwill			$ 29,917us-gaap_Goodwill
Intangible assets, net	1,260us-gaap_FiniteLivedIntangibleAssetsNet			1,344us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets, accumulated amortization	1,505
Amortization of intangible assets	84us-gaap_AmortizationOfIntangibleAssets	84us-gaap_AmortizationOfIntangibleAssets
Service 1st Bank
Goodwill and Intangible Assets
Goodwill	14,643
Service 1st Bank \| Core Deposits
Goodwill and Intangible Assets
Core deposit relationships acquired			1,400
Bank of Madera County
Goodwill and Intangible Assets
Goodwill	8,934
Visalia Community Bank
Goodwill and Intangible Assets
Goodwill	6,340
Visalia Community Bank \| Core Deposits
Goodwill and Intangible Assets
Core deposit relationships acquired	$ 1,365
Minimum \| Core Deposits
Goodwill and Intangible Assets
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum \| Core Deposits
Goodwill and Intangible Assets
Finite-Lived Intangible Asset, Useful Life	10 years