Short-term Borrowings/Other Borrowings (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Short-term Debt [Line Items]
Short-term debt outstanding	$ 0	$ 0
Federal Reserve Bank of San Francisco [Member]
Short-term Debt [Line Items]
Short-term Debt	265,792,000	217,841,000
Qualifying loans pledged as collateral for borrowing lines	344,261,000	324,462,000
Unused borrowing lines		217,841,000
Federal Home Loan Bank (FHLB) [Member]
Short-term Debt [Line Items]
Short-term Debt	7,498,000	10,493,000
Investment securities pledged as collateral	$ 7,898,000	$ 11,054,000

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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- Definition

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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