Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Schedule of carrying values of inventories

Inventories consisted of the following: 

	At June 30,				At December 31,
(in thousands)	2015		2014		2014
Raw materials	$	92,101	$	90,541	$	97,732
In-process products	20,606		20,810		19,496
Finished products	99,586		107,685		99,317
	$	212,293	$	219,036	$	216,545