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 ($)	3 Months Ended		9 Months Ended
Goodwill and Intangible Assets (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Goodwill and Intangible Assets
Goodwill	$ 29,917,000		$ 29,917,000		$ 29,917,000
Intangible assets, net	922,000		922,000		$ 1,024,000
Intangible assets, accumulated amortization	1,843,000		1,843,000
Amortization of intangible assets	34,000	$ 85,000	102,000	$ 253,000
Service 1st Bank
Goodwill and Intangible Assets
Goodwill	14,643,000		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		8,934,000
Visalia Community Bank
Goodwill and Intangible Assets
Goodwill	$ 6,340,000		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