Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories as of March 31, 2016 and December 31, 2015 were as follows:

In thousands	March 31, 2016			December 31, 2015
Raw materials	$	20,956		$	17,128
Work in process	16,288			14,670
Finished goods	14,143			15,048
	51,387			46,846
Less: Progress billings	(236		)	(316		)
Total inventories	$	51,151		$	46,530