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
Numerator for basic and diluted earnings per common share - Net income applicable to common shares (in dollars)	$ 5,423	$ 3,553	$ 12,891	$ 9,951
Denominator:
Denominator for basic earnings per common share - weighted average common shares, including participating securities	9,729	9,725	9,728	9,248
Effect of warrants	223	151	215	151
Effect of restricted stock units	20	4	25	4
Effect of employee stock options	28	15	25	14
Denominator for diluted earnings per common share	10,000	9,895	9,993	9,417
Basic earnings per common share	$ 0.56	$ 0.37	$ 1.33	$ 1.08
Diluted earnings per common share	$ 0.54	$ 0.36	$ 1.29	$ 1.06