Restatement of Previously Issued Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt partial extinguishment		$ 2,467	$ 0	$ 2,467	$ 0
Increase (decrease) to non-cash interest expense		(7,600)		(7,600)
Adjustments to additional paid in capital				8,000
Allowance for uncollectible accounts, pricing and shipment error				300
Increase (decrease) in revenue, error		(300)		(300)
Increase (decrease) in accounts receivable, error		(400)		(400)
Increase (decrease) in accounts payable, pricing and shipment error		100		100
Allowance for uncollectible accounts, revenues net error				200
Increase (decrease) in selling, general and administrative expense		(200)		(200)
Property, plant and equipment, net, error		300		300
Increase (decrease) in property, plant and equipment, net, cost of revenue error		$ (300)		$ 300
Reduction of revenue on wholesale fees			2,000		4,200
Reduction of accounts receivable on wholesale fees			5,400		5,400	$ 7,000
Increase (decrease) to accrued expenses, wholesale fees			(5,400)		(5,400)	(7,000)
Increase (decrease) in accounts receivable, error			2,500		2,500	1,600
Increase (decrease) in accrued expenses, error			$ 2,500		$ 2,500	$ 1,600
Convertible Note 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Stated interest rate		3.75%		3.75%		3.75%
Debt, transfer	$ 75,100
Debt partial extinguishment	75,100
Non-cash interest expense	$ 10,100	$ 2,500
Convertible Note 2023
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Stated interest rate		4.75%		4.75%		4.75%
Unamortized discounts and debt issuance costs		$ 400		$ 400