Commitments, Guarantees and Contingent Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fixed Rate, Commitments to make loans	$ 40,383	$ 37,546
Fixed Rate, Unused lines of credit	22,767	20,385
Fixed Rate, Standby letters of credit	0	0
Fixed Rate, Total	63,150	57,931
Variable Rate, Commitments to make loans	82,986	69,232
Variable Rate, Unused lines of credit	299,208	307,449
Variable Rate, Standby letters of credit	19,799	17,886
Variable Rate, Total	$ 401,993	$ 394,567