Financing Agreements - Striant (Details) (USD $)	0 Months Ended	12 Months Ended					0 Months Ended		12 Months Ended
	Jul. 22, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 20, 2011	Nov. 30, 2010	Jul. 02, 2010 Striant [Member]	Mar. 05, 2003 Striant [Member] Quarter	Dec. 31, 2010 Striant [Member]	Nov. 30, 2010 Striant [Member]	Jul. 22, 2009 Striant [Member]	Mar. 05, 2003 Minimum [Member]	Jul. 22, 2009 Minimum [Member] Striant [Member]	Mar. 05, 2003 Maximum [Member]	Jul. 22, 2009 Maximum [Member] Striant [Member]
Class Of Warrant or Right [Line Items]
Agreement, quarterly installment amount receivable for sale of productive assets								$ 15,000,000
Agreement, quarterly installment amount receivable for sale of productive assets, number of quarterly installments								5
Royalty revenue percentage								0.09
Royalty payment threshold on net sales								0.045
Royalty term								7 years
Royalty payment cap												30,000,000		55,000,000
Exercise Price		0.01				1.15
Notes payable interest accrual rate								15.00%
Interest expense		0	12,111	4,837,688					1,146,443
Agreement, threshold for sale of assets before proceeds would be deposited in escrow													15,000,000		30,000,000
Warrants received to purchase common stock, in shares										900,000	900,000
Warrant liability, fair value				13,471,832	16,193,037					719,904
Fair value, warrant										0.80
Warranty term	5 years
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Proceeds from sale of property, plant, and equipment										40,000,000
Payments for (proceeds from) derivative instrument, financing activities		0	0	16,155,903			16,200,000
Write off of deferred debt issuance cost				$ 738,153			$ 225,000