SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS - Deferred Tax Asset Valuation Allowance (Details) - Deferred Tax Asset Valuation Allowance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	$ 952,337	$ 989,924	$ 944,576
Charges to Costs, Expenses and other	71,799	319,429	109,285
Reversal	(2,835)	(12,155)	(49,577)
Adjustments	(11,078)	(344,861)	(14,360)
Balance at End of Period	$ 1,010,223	$ 952,337	$ 989,924