Convertible Notes - Schedule of Convertible Note Redemptions (Details) (Convertible Subordinated Debt [Member], USD $)	0 Months Ended			1 Months Ended	12 Months Ended
	Jul. 08, 2010	Jun. 29, 2010	Jun. 24, 2010	Feb. 28, 2009	Dec. 31, 2012	Dec. 31, 2010
Convertible Subordinated Debt [Member]
Redemptions of Convertible Notes
Convertible notes redeemed	$ 1,848,000	$ 1,200,000	$ 7,940,000	$ 15,000,000	$ 25,988,000	$ 10,988,000
Convertible notes, redemption price	99.25%	99.00%	98.90%	86.50%
Convertible notes, redemption discount	13,860	12,000	89,325	2,025,000	2,140,185	115,185
Convertible note redemption, related note issuance costs written off	$ 20,546	$ 13,703	$ 90,904	$ 250,154	$ 375,307	$ 125,153