Stock Option Plans (Summary of Stock Option Activity) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Number of Shares
Outstanding, December 31, 2011	1,749,310
Granted (Unaudited)	95,000
Exercised (Unaudited)
Expired (Unaudited)	(68,484)
Forfeited (Unaudited)	(64,183)
Outstanding, March 31, 2013 (Unaudited)	1,711,643	1,749,310
Exercisable, March 31, 2013 (Unaudited)	773,381
Weighted Average Exercise Price
Outstanding, December 31, 2011	$ 2.12
Granted (Unaudited)	$ 1.39
Exercised (Unaudited)
Expired (Unaudited)	$ 3.80
Forfeited (Unaudited)	$ 1.63
Outstanding, March 31, 2013 (Unaudited)	$ 2.03	$ 2.12
Exercisable, March 31, 2013 (Unaudited)	$ 2.84
Remaining Contractual Life (Years)
Outstanding, December 31, 2011	8 years 2 months 27 days	8 years 3 months 26 days
Granted (Unaudited)	9 years 10 months 28 days
Expired (Unaudited)	6 years 18 days
Forfeited (Unaudited)
Outstanding, March 31, 2013 (Unaudited)	8 years 2 months 27 days	8 years 3 months 26 days
Exercisable, March 31, 2013 (Unaudited)	7 years 11 days
Aggregate Intrinsic Value
Outstanding, December 31, 2011	$ 151,919
Granted (Unaudited)
Expired (Unaudited)	27
Forfeited (Unaudited)	3,400
Outstanding, March 31, 2013 (Unaudited)	92,464	151,919
Exercisable, March 31, 2013 (Unaudited)	$ 14,606