Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - Valuation allowance for deferred tax asset - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movement in Valuation Allowances and Reserves
Balance at beginning of year	$ 116,543	$ 110,781	$ 142,496
Additions charged to expense	7,490	23,150	5,324
Deductions	(2,255)	(17,388)	(37,039)
Balance at end of year	$ 121,778	$ 116,543	$ 110,781