SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 284,705	$ 373,288	$ 295,681
Charged to Costs and Expenses	160,027	273,611	294,798
Charged to Other Accounts	0	0	0
Deductions from Reserves	190,974	362,194	217,191
Balance at End of Period	253,758	284,705	373,288
Allowance for Trade Receivables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	24,610	41,792	40,153
Charged to Costs and Expenses	159,140	222,819	166,993
Charged to Other Accounts	0	0	0
Deductions from Reserves	158,784	240,001	165,354
Balance at End of Period	24,966	24,610	41,792
Valuation Allowance of Net Deferred Taxes
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	239,959	312,148	235,485
Charged to Costs and Expenses	(26,270)	18,413	92,139
Charged to Other Accounts	0	0	0
Deductions from Reserves	6,946	90,602	15,476
Balance at End of Period	206,743	239,959	312,148
Inventory Obsolescence Reserve
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	20,136	19,348	20,043
Charged to Costs and Expenses	27,157	32,379	35,666
Charged to Other Accounts	0	0	0
Deductions from Reserves	25,244	31,591	36,361
Balance at End of Period	$ 22,049	$ 20,136	$ 19,348