Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 275	$ 25
Additions (Reductions) Charged to Operations
Deductions Other	[1]	(203)	250
Balance at end of Period		72	275
Allowance for Doubtful Notes [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		869	869
Additions (Reductions) Charged to Operations
Deductions Other	[1]
Balance at end of Period		869	869
SEC Schedule, 12-09, Valuation Allowance, Other Tax Carryforward [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		23,684	17,027
Additions (Reductions) Charged to Operations
Deductions Other	[1]	9,486	6,657
Balance at end of Period		$ 33,170	$ 23,684

[1] Includes payments and actual write offs, as well as changes in estimates in the reserves.