Property, Plant and Equipment (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 28,900,000	$ 27,800,000	$ 28,300,000
Unpaid capital expenditure liabilities	3,800,000	$ 5,300,000	3,500,000
Impairment charges related to property, plant and equipment	$ 0
Discontinued Operations
Property, Plant and Equipment [Line Items]
Depreciation expense			$ 11,300,000