Inventory (Tables)

9 Months Ended

Sep. 30, 2018

Inventory.

Schedule of Inventory

Inventory as of September 30, 2018 and December 31, 2017 consists of the following (in thousands):

	September 30, 2018		December 31, 2017
Raw materials and supplies	$	40,119	$	42,851
Work-in-process		10,088		3,492
Finished goods		3,221		2,433
	$	53,428	$	48,776