Investment Securities (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Gross realized gains and losses
Gross realized gains	$ 2,191	$ 439	$ 3,757	$ 2,759
Gross realized losses	46	442	732	502
Investment securities, approximate carrying value	128,672		128,672		141,876
U.S. Government and agency securities
Gross realized gains and losses
Gross realized gains	0	0	49	0
Gross realized losses	0	0	45	0
Mortgage-backed securities
Gross realized gains and losses
Gross realized gains	13	0	89	0
State and political securities
Gross realized gains and losses
Gross realized gains	1,361	276	2,093	1,917
Gross realized losses	9	415	412	475
Other debt securities
Gross realized gains and losses
Gross realized gains	149	163	611	462
Gross realized losses	37	27	209	27
Financial institution equity securities
Gross realized gains and losses
Gross realized gains	582	0	710	130
Other equity securities
Gross realized gains and losses
Gross realized gains	86	0	205	250
Gross realized losses	$ 0	$ 0	$ 66	$ 0