Stock Compensation (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Compensation (Textual) [Abstract]
Options outstanding term period	10 years
Stock based compensation expense related to outstanding stock options	$ 325	$ 577	$ 636
Restricted stock granted	114,648	272,081
Weighted average grant price	$ 18.40	$ 18.85
Shares vest on the grant date	96,330
Shares granted vest on the grant date anniversary year I	25.00%
Shares granted vest on the grant date anniversary year II	25.00%
Shares granted vest on the grant date anniversary year III	50.00%
Stock based compensation expense related to the restricted shares	1,734	1,736	1,422
Weighted average fair market value of options granted			$ 14.64	$ 10.92
Total intrinsic value of options exercised	253	1,432	2,745
Total unrecognized compensation cost related to non-vested share based compensation	$ 103
Expected weighted-average period for cost recognized	1 year 2 months 12 days
Directors Stock Award Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Shares were granted pursuant to the Directors' Stock Award Plan	18,318
Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding vest period	5 years
Minimum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding vest period	3 years