Property, Plant, and Equipment, Net (Schedule of Property, Plant, and Equipment, Net) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 59,800,000	$ 58,200,000	$ 59,900,000
Property, plant, and equipment, gross	869,743,000	780,950,000
Less accumulated depreciation	(523,092,000)	(489,354,000)
Property, plant, and equipment, net	346,651,000	291,596,000
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	26,951,000	20,961,000
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	204,077,000	170,928,000
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	383,881,000	327,678,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	96,303,000	88,305,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	147,760,000	131,756,000
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 10,771,000	$ 41,322,000