Stock Compensation (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Summary of the status of the Company's non-vested share activity
Options, Beginning Balance	569,587	699,234
Options, Granted
Weighted Average Grant Date Fair Value, Granted			$ 14.64	$ 10.92
Options, Forfeited	(6,000)	(19,512)
Options, Ending Balance	537,943	569,587	699,234
Non-vested Options [Member]
Summary of the status of the Company's non-vested share activity
Options, Beginning Balance	116,577	327,484
Weighted Average Grant Date Fair Value, Beginning Balance	14.29	14.02
Options, Granted
Weighted Average Grant Date Fair Value, Granted
Options, Vested	(52,664)	(191,395)
Weighted Average Grant Date Fair Value, Vested
Options, Forfeited	(6,000)	(19,512)
Weighted Average Grant Date Fair Value, Forfeited
Options, Ending Balance	57,913	116,577
Weighted Average Grant Date Fair Value, Ending Balance	16.27	14.29