Convertible Notes and Warrant Liabilities (Details 2) (USD $)	0 Months Ended	6 Months Ended		10 Months Ended	12 Months Ended			0 Months Ended	10 Months Ended	12 Months Ended		6 Months Ended		12 Months Ended	0 Months Ended	6 Months Ended	10 Months Ended	12 Months Ended			6 Months Ended		12 Months Ended
	Feb. 22, 2011	Dec. 31, 2012	Jul. 02, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Feb. 22, 2011 Investor Warrants	Dec. 31, 2011 Investor Warrants	Dec. 31, 2012 Investor Warrants	Dec. 31, 2011 Investor Warrants	Dec. 31, 2012 2012 Warrant Liabilities	Jul. 02, 2012 2012 Warrant Liabilities	Dec. 31, 2012 2012 Warrant Liabilities	Feb. 22, 2011 Convertible Notes	Dec. 31, 2012 Convertible Notes	Dec. 31, 2011 Convertible Notes	Dec. 31, 2012 Convertible Notes	Dec. 31, 2011 Convertible Notes	Jan. 16, 2013 Convertible Notes	Dec. 31, 2012 Convertible Notes Second Tranche	Jul. 02, 2012 Convertible Notes Second Tranche	Dec. 31, 2012 Convertible Notes Second Tranche	Dec. 31, 2011 Convertible Notes Second Tranche
Convertible Notes and Warrant Liabilities
Initial carrying value															$ 3,208,000					$ 5,250,000		$ 417,000
Derivative liability								908,000	1,600,000	2,400,000	1,600,000	1,800,000	2,900,000	1,800,000	3,677,000	6,510,000	5,327,000	6,510,000	5,327,000		1,588,000	2,073,000	1,588,000
Net charge to other income (expense)					2,024,000	1,894,000												918,000	1,894,000				1,105,000
Net charge to other income (expense)					1,617,000	808,000				918,104	808,000			1,100,000
Debt discount to be amortized															792,000						583,000		583,000
Interest expense amortized					265,000	225,000																	66,000	0
Changes in the Convertible Notes and Investor Warrants
Allocation of initial proceeds	4,000,000		1,000,000					792,000					583,000		3,208,000							417,000
Amortization of debt discount		331,000		225,000	331,000	225,000										265,000	225,000				66,000
Fair value adjustment	585,000	(333,000)	3,973,000	2,117,000				116,000	692,000			(1,100,000)	2,317,000		469,000	918,000	1,425,000				(551,000)	1,656,000
Total Liabilities	4,585,000	11,898,000	11,900,000	6,927,000	11,898,000	6,927,000		908,000	1,600,000	2,000,000	1,600,000	1,800,000	2,900,000	1,800,000	3,677,000	6,510,000	5,327,000	6,510,000	5,327,000		1,588,000	2,073,000	1,588,000
Financing costs
Financing costs associated with convertible notes					80,000	530,000
Financing costs recorded in prepaid expenses and other current assets							$ 135,000