Long-term Subordinated Debt (Subordinated Debt [Member])	12 Months Ended
Dec. 31, 2011
Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term Subordinated Debt	Long-term Subordinated Debt In July 2011, the Company elected to redeem the junior subordinated debentures and terminated Columbia (WA) Statutory Trust I and Town Center Bancorp Trust I with a cash payment of $22.9 million and $3.1 million, respectively which consisted of principal, interest and fees. The trust preferred obligations were classified as long-term subordinated debt on the Company's balance sheet and the decision to redeem was based upon the Company's cash and capital positions, rates on the debentures and the absence of a prepayment penalty.

Long-term Subordinated Debt (Subordinated Debt [Member])

12 Months Ended

Dec. 31, 2011

Subordinated Debt [Member]

In July 2011, the Company elected to redeem the junior subordinated debentures and terminated Columbia (WA) Statutory Trust I and Town Center Bancorp Trust I with a cash payment of $22.9 million and $3.1 million, respectively which consisted of principal, interest and fees. The trust preferred obligations were classified as long-term subordinated debt on the Company's balance sheet and the decision to redeem was based upon the Company's cash and capital positions, rates on the debentures and the absence of a prepayment penalty.