Inventories Inventories (Tables)

12 Months Ended

Dec. 31, 2019

Inventory [Line Items]

Schedule of Inventory, Current [Table Text Block]

Components of inventories, net of reserve, are as follows:

	December 31,
	2019		2018
	(In Thousands)
Finished goods	$	70,135	$	69,762
Raw materials	4,125		3,503
Parts and supplies	47,793		47,386
Work in progress	14,457		22,920
Total inventories	$	136,510	$	143,571