Schedule II - Valuation and Qualifying Accounts Deferred Tax Assets - (Details) - Valuation allowance for deferred tax assets - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation allowance and reserves
Balance at Beginning of Period	$ 295,946	$ 266,452	$ 180,983
Tax Valuation Allowance Charged to Income Tax Provision	0	19,058	85,903
Tax Valuation Allowance Credited to Income Tax Provision	(2,234)	0	(434)
Charged to Other Accounts	18,376	10,436	0
Balance at End of Period	$ 312,088	$ 295,946	$ 266,452