Derivative Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative loss
Warrant liability fair market adjustment	$ 545	$ (200)	$ 2,821	$ (1,068)
Derivative loss			(778)
Sentient Loan
Derivative loss
Derivative loss			(800)
Warrant Liability
Derivative loss
Warrant liability fair market adjustment			$ 2,800	$ (1,100)