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Short-term Borrowings/Other Borrowings (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
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	302,568,000
Short-term Debt		286,993,000
Qualifying loans pledged as collateral for borrowing lines	429,015,000	406,358,000
Federal Home Loan Bank (FHLB)
Short-term Debt [Line Items]
Short-term Debt	3,098,000	5,814,000
Investment securities pledged as collateral	3,280,000	6,106,000
Pacific Coast Bankers Bank
Short-term Debt [Line Items]
Unused borrowing lines	10,000,000	$ 10,000,000
Federal Funds Purchased | Zions First National Bank | Revolving Credit Facility
Short-term Debt [Line Items]
Unused borrowing lines	$ 20,000,000

X

- Definition

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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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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