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 ($)	3 Months Ended
Goodwill and Intangible Assets (Details) - USD ($)	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2014	Dec. 31, 2015
Goodwill and Intangible Assets
Goodwill	$ 29,917,000			$ 29,917,000
Intangible assets, net	990,000			$ 1,024,000
Intangible assets, accumulated amortization	1,775,000
Amortization of intangible assets	34,000	$ 84,000	$ 84,000
Service 1st Bank
Goodwill and Intangible Assets
Goodwill	14,643,000
Service 1st Bank \| Core Deposits
Goodwill and Intangible Assets
Core deposit relationships acquired	1,400,000
Bank of Madera County
Goodwill and Intangible Assets
Goodwill	8,934,000
Visalia Community Bank
Goodwill and Intangible Assets
Goodwill	6,340,000
Visalia Community Bank \| Core Deposits
Goodwill and Intangible Assets
Core deposit relationships acquired	$ 1,365,000
Minimum \| Core Deposits
Goodwill and Intangible Assets
Estimated useful life	7 years
Maximum \| Core Deposits
Goodwill and Intangible Assets
Estimated useful life	10 years