SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 4,110	$ 4,220	$ 4,053
Additions: Charged to Costs and Expenses	6,168	8,046	7,925
Deductions: Write-offs and recoveries	(5,535)	(8,156)	(7,758)
Balance at End of Period	4,743	4,110	4,220
Deferred tax asset valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	45	45	45
Additions: Charged to Costs and Expenses	0	0	0
Deductions: Write-offs and recoveries	0	0	0
Balance at End of Period	$ 45	$ 45	$ 45