Inventories (Tables)

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Schedule of inventory

Inventories consist of the following at June 30, 2017 and December 31, 2016 (in thousands):

	June 30, 2017		December 31, 2016
Raw materials (1)	$	138,686	$	175,240
Work-in-process (1)	96,618		100,494
Finished goods (1)	254,448		279,937
Total	$	489,752	$	555,671

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(1) The components of inventory shown in the table above are net of allowance for obsolescence.