Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill	$ 53,777	$ 53,777
Core deposit intangibles	1,183	1,878
Intangible assets, accumulated amortization	2,569	1,874
Amortization of core deposit intangibles	695	$ 695	$ 455
Folsom Lake Bank
Goodwill [Line Items]
Goodwill	13,466
Sierra Vista Bank
Goodwill [Line Items]
Goodwill	10,394
Visalia Community Bank
Goodwill [Line Items]
Goodwill	6,340
Service 1st Bank
Goodwill [Line Items]
Goodwill	14,643
Bank of Madera County
Goodwill [Line Items]
Goodwill	$ 8,934
Core deposits
Goodwill [Line Items]
Acquired finite-lived intangible assets useful life	2 years
Core deposits \| Folsom Lake Bank
Goodwill [Line Items]
Acquired finite-lived intangible assets	$ 1,879
Core deposits \| Sierra Vista Bank
Goodwill [Line Items]
Acquired finite-lived intangible assets	508
Core deposits \| Visalia Community Bank
Goodwill [Line Items]
Acquired finite-lived intangible assets	$ 1,365
Minimum \| Core deposits
Goodwill [Line Items]
Estimated useful life of intangible asset	5 years
Maximum \| Core deposits
Goodwill [Line Items]
Estimated useful life of intangible asset	10 years