Inventories (Tables)

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consist of the following:

(In thousands)	September 30 2020		December 31 2019
Finished goods	$	14,736	$	14,550
Work-in-process	13,489		13,088
Raw materials and purchased parts	111,754		104,488
Stores and supplies	30,058		24,865
Total inventories	$	170,037	$	156,991