Subsequent Events (Details) (USD $)	3 Months Ended								12 Months Ended			2 Months Ended	1 Months Ended			12 Months Ended		2 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 01, 2014 Subsequent Event	Jan. 31, 2012 New Jersey	Feb. 28, 2011 New Jersey	Feb. 28, 2014 New Jersey Subsequent Event	Dec. 31, 2012 New Jersey Subsequent Event	Dec. 31, 2010 Maxim 2010 Agreement	Mar. 01, 2014 Maxim 2010 Agreement Subsequent Event
Gain from sale of income tax operating losses	$ 0	$ 0	$ 0	$ 686,000	$ 0	$ 0	$ 0	$ 1,328,000	$ 686,000	$ 1,328,000	$ 2,272,000		$ 1,328,000	$ 2,272,000	$ 1,126,000	$ 686,000
Shares sold at the market, Common Stock Shares												10,654,356
Proceeds from Issuance or Sale of Equity												4,788,000
Shares sold at the market									249,000	23,003,000
Commissions paid on shares sold under equity distribution agreement																	$ 12,000	$ 148,000