Securities Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 Security	Dec. 31, 2012	Dec. 31, 2011
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of securities	$ 24,200,000	$ 41,000,000	$ 37,600,000
Gross gains realized on sale of securities	732,000	743,000	476,000
Gross loss realized on sale of securities	314,000	298,000	16,000
Net impairment losses	0	0	25,000
Tax expense related to realized gains	142,000	151,000	148,000
Carrying value of securities pledged for fiduciary powers	$ 102,300,000	$ 142,200,000
Number of securities temporarily impaired	132
Number of securities temporarily impaired in investment grade	131
Number of securities temporarily impaired in speculative grade	1