Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning Balance	$ 52,393	$ 57,209	$ 11,985
Additions
Charged to Other Accounts	42,236	0	0
Charged to Costs and Expenses	9,636	25,480	51,387
Deductions	36,464	30,296	6,163
Ending Balance	$ 67,801	$ 52,393	$ 57,209