Correction to Previously Issued Unaudited Interim Condensed Consolidated Financial Statements (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue, net		$ 11,340		$ 45,435
Cost of revenues	$ 11,575	8,802	$ 32,365	23,926
Total costs and expenses	$ 19,507	19,379	$ 58,742	52,289
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue, net		12,851		51,150
Cost of revenues		10,313		29,641
Total costs and expenses		20,890		58,004
Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue, net		1,511		5,715
Cost of revenues		1,511		5,715
Total costs and expenses		$ 1,511		$ 5,715