Inventories (Tables)

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories as of June 30, 2017 and December 31, 2016 were as follows:

In thousands	June 30, 2017			December 31, 2016
Raw materials	$	31,131		$	24,518
Work in process	28,185			17,161
Finished goods	24,524			25,360
	83,840			67,039
Less: Progress billings	(1,851		)	(893		)
Total inventories	$	81,989		$	66,146