Inventories (Tables)

6 Months Ended

Jun. 30, 2021

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consist of the following:

(In thousands)	June 30 2021		December 31 2020
Finished goods	$	8,172	$	8,505
Work-in-process	25,029		29,005
Raw materials and purchased parts	91,122		105,306
Stores and supplies	33,293		30,197
Total inventories	$	157,616	$	173,013