Subsequent Events (Notes)	3 Months Ended
Mar. 31, 2013
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. Recognized subsequent events are events or transactions that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing financial statements. Nonrecognized subsequent events are events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after that date. On April 1, 2013, the Company completed its acquisition of West Coast Bancorp ("West Coast"). The Company acquired 100% of the voting equity interests of West Coast. The primary reason for the acquisition was to expand the Company's geographic footprint consistent with its ongoing growth strategy. The operating results of the Company for the three months ended March 31, 2013 do not include the operating results produced by West Coast as the acquisition did not close until April 1, 2013. It is not practical to present financial information related to the acquisition at this time because the fair value measurement of assets acquired and liabilities assumed has not been finalized.

Subsequent Events

Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. Recognized subsequent events are events or transactions that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing financial statements. Nonrecognized subsequent events are events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after that date.

On April 1, 2013, the Company completed its acquisition of West Coast Bancorp ("West Coast"). The Company acquired 100% of the voting equity interests of West Coast. The primary reason for the acquisition was to expand the Company's geographic footprint consistent with its ongoing growth strategy. The operating results of the Company for the three months ended March 31, 2013 do not include the operating results produced by West Coast as the acquisition did not close until April 1, 2013. It is not practical to present financial information related to the acquisition at this time because the fair value measurement of assets acquired and liabilities assumed has not been finalized.