Supplemental Financial Information (Components of Other Operating (Income) Expense, Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Income Statement Elements [Abstract]
Lease income	$ 0	$ (989)	$ (948)
Depreciation on leased assets	0	1,907	3,512
Loss (gain) on sale or disposal of property, plant and equipment	41	756	(164)
Gain from antitrust litigation settlement	0	0	(4,231)
Indemnity claim settlements from acquisitions	0	(715)	(700)
Economic incentive grants	(145)	0	(556)
Total other operating (income) expense, net	$ (104)	$ 959	$ (3,087)