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		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 4,923	$ 4,353	$ 9,847	$ 8,584
Preferred stock dividends	(28)	(84)	(84)	(225)
Net income available to common stockholders	$ 4,895	$ 4,269	$ 9,763	$ 8,359
Basic weighted average common shares outstanding	16,348,915	16,333,653	16,348,567	16,332,990
Plus: effect of dilutive options	27	8	26	7
Diluted weighted average common shares outstanding	16,375,774	16,341,767	16,375,028	16,340,011
Earnings per Common Share: Basic	$ 0.30	$ 0.26	$ 0.60	$ 0.51
Earnings per Common Share: Diluted	$ 0.30	$ 0.26	$ 0.60	$ 0.51