Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Components of inventory

Inventories are as follows (in thousands):

	September 30, 2017		December 31, 2016
Raw materials	$	37,961	$	28,626
Work-in-process	3,042		2,918
Finished goods	29,713		26,739
Inventories	$	70,716	$	58,283