Property And Equipment (Details) - USD ($)	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 [Line Items]
Property and equipment, gross	$ 335,254,000		$ 335,254,000		$ 351,819,000
Less allowance for depreciation	(282,010,000)		(282,010,000)		(290,898,000)
Property and equipment, net	53,244,000		53,244,000		60,921,000
Capitalized Computer Software, Net	26,833,000		26,833,000		28,715,000
Computer Software Depreciation Expense	832,000	$ 419,000	2,342,000	$ 1,084,000
Unpaid Purchases of Property and Equipment	0		0		1,090,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	267,218,000		267,218,000		278,347,000
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,432,000		24,432,000		27,299,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,970,000		7,970,000		8,943,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,730,000		4,730,000		6,782,000
Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 30,904,000		$ 30,904,000		$ 30,448,000