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Borrowings and Other Obligations - Subordinated Debt (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 15, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2013
Debt Instrument [Line Items]
Accretion of discount on subordinated debentures		$ 1,347	$ 69	$ 68
NorCal Community Bancorp Trust II \| Subordinated debenture
Debt Instrument [Line Items]
Long-term debt					$ 4,100
Repayments of Debt	$ 2,800
Interest rate, effective percentage		251.50%	5.70%
Accretion of discount on subordinated debentures		$ 1,300	$ 69	$ 68