Stock Options (Information about Equity Incentive Plan - Options Exercisable by Exercise Range) (Details) (USD $)			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 $1.13 to $2.25 [Member]	Dec. 31, 2012 $2.26 to $2.82 [Member]	Dec. 31, 2012 $2.83 to $4.19 [Member]	Dec. 31, 2012 $6.00 [Member]	Dec. 31, 2012 $15.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, minimum			$ 1.13	$ 2.26	$ 2.83	$ 6.0	$ 15.0
Exercise price, maximum			$ 2.25	$ 2.82	$ 4.19
Options exercisable	5,372,500	5,541,500	330,000	10,000	2,500	30,000	5,000,000
Weighted average remaining contractual life							3 years 9 months 18 days
Weighted average exercise price			$ 2.22	$ 2.82	$ 4.19	$ 6.0	$ 15.0
Aggregate intrinsic value			$ 1,059,400	$ 26,100	$ 3,100
Closing price, share	$ 5.43