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Property, Plant and Equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 286,249		$ 286,249		$ 294,335
Accumulated depreciation and amortization	(210,116)		(210,116)		(207,757)
Property, plant and equipment, net	76,133		76,133		86,578
Depreciation expense	5,900	$ 6,100	18,300	$ 18,400
Land
Property, Plant and Equipment, net
Property, plant and equipment, gross	2,499		2,499		2,762
Buildings and improvements
Property, Plant and Equipment, net
Property, plant and equipment, gross	23,790		$ 23,790		24,787
Buildings and improvements \| Minimum
Property, Plant and Equipment, net
Useful Life (Years)			30 years
Buildings and improvements \| Maximum
Property, Plant and Equipment, net
Useful Life (Years)			40 years
Office furniture and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	19,219		$ 19,219		16,620
Office furniture and equipment \| Minimum
Property, Plant and Equipment, net
Useful Life (Years)			5 years
Office furniture and equipment \| Maximum
Property, Plant and Equipment, net
Useful Life (Years)			8 years
Machinery and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 240,741		$ 240,741		$ 250,166
Machinery and equipment \| Minimum
Property, Plant and Equipment, net
Useful Life (Years)			5 years
Machinery and equipment \| Maximum
Property, Plant and Equipment, net
Useful Life (Years)			7 years