Debt - Debt Outstanding (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Senior Secured Debt, net	$ 37,670	$ 36,654
Issuance costs	(98)	(104)
Other Note Payable, net	3,628	3,538
Total Debt	41,298	40,192
Senior Secured Debt, net
Debt Instrument [Line Items]
Senior Secured Debt, net	25,000	25,000
Payment-in-kind (PIK) interest
Debt Instrument [Line Items]
Senior Secured Debt, net	12,768	11,758
Other Note Payable, net	1,128	1,038
Other Note Payable, net
Debt Instrument [Line Items]
Other Note Payable, net	$ 2,500	$ 2,500