Summary of Significant Accounting Policies and Other Information - Schedule of Inventory, Current (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Inventories
Raw materials	$ 82,837		$ 90,877
Work in process	3,802		2,390
Finished goods	28,010		18,077
Total inventories	114,649		111,344
Inventory allowance	(4,893)		(5,730)
Inventories, net	109,756		$ 105,614
Inventory Allowance
Balance at beginning of period	5,730	$ 6,227
Charged to expense	41	433
Write-offs	(878)	(1,653)
Balance at end of period	$ 4,893	$ 5,007