Earnings Per 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	$ 3,222	$ 4,024	$ 10,157	$ 11,382
Total weighted average basic common shares outstanding	19,405,597	19,531,694	19,500,430	19,705,105
Effect of dilutive stock options and restricted stock awards	998,911	931,544	1,030,692	914,979
Total weighted average diluted common shares outstanding	20,404,508	20,463,238	20,531,122	20,620,084
Earnings per share-basic	$ 0.17	$ 0.21	$ 0.52	$ 0.59
Earnings per share-diluted	$ 0.16	$ 0.20	$ 0.49	$ 0.56
Weighted average anti-dilutive common shares	809,870	567,995	762,081	431,446