Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 43,981	$ 65,575
Work-in-process	25,736	31,184
Finished products	10,766	3,393
Total inventories	80,483	100,152
Less reserves	(3,602)	(3,187)
Total inventories, net	$ 76,881	$ 96,965