Valuation and Qualifying Accounts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for Doubtful Accounts Receivable [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 390,000	$ 700,000	$ 492,000	$ 830,000
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Charges to Expense	(294,000)	393,000	(24,000)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	(16,000)	(185,000)	(314,000)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 390,000	700,000	492,000
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount			287,276,000	$ 277,693,000
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Charges to Expense		(284,551,000)	16,762,000
Charges to Revenue			7,179,000
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction		$ (2,725,000)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount			$ 287,276,000