Earnings per Common Share (Schedule of Computation of Earnings per Common Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 5,094	$ 4,454	$ 14,941	$ 13,038
Preferred stock dividends	(28)	(28)	(112)	(253)
Net income available to common stockholders	$ 5,066	$ 4,426	$ 14,829	$ 12,785
Basic weighted average common shares outstanding	16,349,480	16,347,088	16,348,875	16,337,724
Plus: effect of dilutive options	36	16	32	9
Diluted weighted average common shares outstanding	16,385,155	16,362,635	16,380,970	16,346,739
Earnings per Common Share: Basic	$ 0.31	$ 0.27	$ 0.91	$ 0.78
Earnings per Common Share: Diluted	$ 0.31	$ 0.27	$ 0.91	$ 0.78