Short-term Borrowings/Other Borrowings (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
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	295,925,000	287,446,000
Qualifying loans pledged as collateral for borrowing lines	437,547,000	421,393,000
Federal Home Loan Bank (FHLB)
Short-term Debt [Line Items]
Unused borrowing lines	3,954,000	4,119,000
Investment securities pledged as collateral	15,526,000	4,338,000
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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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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