Short-term Borrowings/Other Borrowings (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Short-term debt outstanding	$ 0	$ 0
Federal Reserve Bank of San Francisco
Short-term Debt [Line Items]
Unused borrowing lines	341,410,000	313,445,000
Qualifying loans pledged as collateral for borrowing lines	519,013,000	462,937,000
Federal Home Loan Bank (FHLB)
Short-term Debt [Line Items]
Unused borrowing lines	5,111,000	5,815,000
Investment securities pledged as collateral	5,582,000	6,201,000
Pacific Coast Bankers Bank
Short-term Debt [Line Items]
Unused borrowing lines	10,000,000	10,000,000
Union Bank
Short-term Debt [Line Items]
Unused borrowing lines	10,000,000
Zions First National Bank
Short-term Debt [Line Items]
Unused borrowing lines	$ 20,000,000	$ 20,000,000

The current portion of Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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