Investment Securities (Details 5) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	$ 79,112
Fair Value	81,965
Washington and Oregon State to secure public deposits [Member]
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	54,560
Fair Value	57,239
Federal Reserve Bank to secure borrowings [Member]
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	6,005
Fair Value	6,036
Repurchase agreements [Member]
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	18,547
Fair Value	$ 18,690