Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Schedule of carrying values of inventories

Inventories at the dates indicated consisted of the following: 

	At June 30,				At December 31,
(in thousands)	2016		2015		2015
Raw materials	$	86,886	$	92,101	$	75,950
In-process products	24,406		20,606		18,828
Finished products	106,872		99,586		100,979
	$	218,164	$	212,293	$	195,757