Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowances for Accounts Receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 4,021	$ 3,219	$ 3,705
Charged to (Released from) Operations	6,499	4,269	3,243
Write-Offs, Net of Recoveries	(3,639)	(3,467)	(3,729)
Other Changes	0	0	0
Balance at End of Period	6,881	4,021	3,219
Valuation Allowance for Deferred Tax Assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	37,472	37,345	1,189
Charged to (Released from) Operations	(37,449)	118	36,224
Write-Offs, Net of Recoveries	0	0	0
Other Changes	(3)	9	(68)
Balance at End of Period	$ 20	$ 37,472	$ 37,345