Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of major classes of inventories

Our major classes of inventories were as follows as of December 31, 2016 and 2015 (in thousands):

	December 31,
	2016		2015
Raw materials	$	14,382	$	19,673
Work in process	3,924		1,985
Finished goods	18,952		18,987
Total inventories	$	37,258	$	40,645