Notes Payable (Details 2) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Maturities of Long-term Debt
Remainder 2015	$ 834	$ 834	$ 416
2016	3,333	3,333	1,667
2017	3,333	3,333	1,667
2018	2,500	2,500	1,250
Total	10,000	10,000	5,000
Less: discount for warrants and costs paid to lender	(260)	(260)	(252)
Less: current portion	(3,191)	(3,191)	(309)
Note payable, net of current portion and discount	6,549	6,549	$ 4,439
Credit Facility
Maturities of Long-term Debt
Interest expense	$ 300	$ 700