The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Intangible Assets - Intangible Assets (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended				9 Months Ended		9 Months Ended
Intangible Assets - Intangible Assets (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Core Deposits	Sep. 30, 2013 Core Deposits	Sep. 30, 2014 Core Deposits	Sep. 30, 2013 Core Deposits	Sep. 30, 2014 Center Financial Corporation Core Deposits	Feb. 15, 2013 Pacific International Bancorp, Inc.	Sep. 30, 2014 Pacific International Bancorp, Inc. Core Deposits	Aug. 13, 2013 Foster Bankshares Inc	Sep. 30, 2014 Foster Bankshares Inc Core Deposits	Sep. 30, 2014 Minimum Core Deposits	Sep. 30, 2014 Maximum Core Deposits
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 105,401,000		$ 105,401,000		$ 105,401,000						$ 118,000		$ 15,525,000
Goodwill impairment	0	0	0	0
Amortization expense related to core deposit intangible qssets						324,000	316,000	972,000	813,000
Amortization period										7 years		7 years		10 years	7 years	10 years
Gross Carrying Amount	7,466,000		7,466,000							4,100,000		603,000		2,763,000
Accumulated Amortization	$ (3,255,000)		$ (3,255,000)							$ (2,504,000)		$ (237,000)		$ (514,000)