Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Schedule of carrying values of inventories

Inventories at the dates indicated consisted of the following: 

	At September 30,				At December 31,
(in thousands)	2019		2018		2018
Raw materials	$	91,088	$	114,075	$	98,058
In-process products	24,554		28,251		24,645
Finished products	127,088		137,177		153,385
	$	242,730	$	279,503	$	276,088