Credit Risk and Concentrations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Concentration Risk [Line Items]
Net revenues	$ 4,469	$ 41,198
Customer Concentration Risk [Member] | Customer A [Member]
Concentration Risk [Line Items]
Net revenues	$ 2,005
Concentration risk, percentage	38.00%
Customer Concentration Risk [Member] | Customer B [Member]
Concentration Risk [Line Items]
Net revenues	$ 633
Concentration risk, percentage	12.00%
Customer Concentration Risk [Member] | Customer C [Member]
Concentration Risk [Line Items]
Net revenues	$ 523
Concentration risk, percentage	10.00%
Customer Concentration Risk [Member] | Customer D [Member]
Concentration Risk [Line Items]
Net revenues		$ 4,603
Concentration risk, percentage		11.00%