Investment Securities (Details 5) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	$ 89,633	$ 77,352
Fair Value	90,171	80,250
Washington and Oregon State to secure public deposits [Member]
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	65,872	53,642
Fair Value	66,558	56,300
Federal Reserve Bank and FHLB to secure borrowing arrangements [Member]
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	0	6,231
Fair Value	0	6,245
Repurchase agreements [Member]
Scheduled of amortized cost and fair value of securities pledged as collateral
Amortized Cost	23,761	17,479
Fair Value	$ 23,613	$ 17,705