Stock Based Compensation (Narrative)(Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Based Compensation [Abstract]
Shares of common stock available for grant	1,500,000
Vested shares	146,000	53,500	10,000
Outstanding options	964,530	839,417	663,500	544,304
Intrinsic value of outstanding shares	$ 44,200	$ 0
Exercisable options	253,930	227,067	218,150
Shares forfeited	171,637	87,933	35,350