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, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 28,469	$ 34,479	$ 16,381
Charged to Cost and Expense	5,933	3,875	10,341
Reductions	(3,464)	(9,326)	(3,706)
Other	1,557	559	11,463
Balance at End of Year	29,381	28,469	34,479
Deferred Tax Valuation Allowance [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	264,398	238,236	289,237
Additions	14,189	26,162	0
Reductions	(34,434)	0	(51,001)
Other	0	0	0
Balance at End of Year	244,153	264,398	238,236
LIFO Reserve [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	20,020	17,571	20,245
Charged to Cost and Expense	491	3,474	1,708
Reductions	(9,083)	(1,025)	(4,382)
Other	0	0	0
Balance at End of Year	$ 11,428	$ 20,020	$ 17,571