Inventories (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following:

	(In thousands) December 31,
	2019		2018
Raw materials and supplies	$	98,151	$	89,767
Work in process	10,887		9,199
Finished goods	3,444		2,159
Total	$	112,482	$	101,125