Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Inventories

Schedule of inventories

	September 30,		December 31,
	2016		2015
	(in thousands)
Raw materials and supplies	$	47,240	$	31,878
Work in process		15,645		21,455
Finished goods		29,351		19,867
Total inventory		92,236		73,200
Less reserve for excess and obsolete inventories		(1,586)		(2,535)
Total inventory, net	$	90,650	$	70,665