Inventory (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Inventory, Net [Abstract]
Finished goods	$ 58,797	$ 52,839
Raw materials	7,361	9,042
Work in process	6,286	5,129
Total inventory	72,444	$ 67,010
Adjustment to reduce inventory and related purchase commitments to estimated net realizable value	$ 9,300