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, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Earnings per Common Share [Abstract]
Net income	$ 4,454	$ 3,702	$ 13,038	$ 10,304
Preferred stock dividends and accretion	28	145	253	436
Net income available to common shareholders	$ 4,426	$ 3,557	$ 12,785	$ 9,868
Basic weighted average common shares outstanding	16,347,088	16,290,700	16,337,724	16,290,598
Plus: effect of dilutive options and warrants	16	22	9	20
Diluted weighted average common shares outstanding	16,362,635	16,313,366	16,346,739	16,310,557
Earnings per Common Share: Basic	$ 0.27	$ 0.22	$ 0.78	$ 0.61
Earnings per Common Share: Diluted	$ 0.27	$ 0.22	$ 0.78	$ 0.61