Income Taxes - Schedule of Components of the Income Tax (Expense) Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
United States	$ 28,091	$ (3,414)	$ (6,304)
Foreign	(125,663)	(91,571)	(126,597)
State	(400)	(166)	(392)
Total current	(97,972)	(95,151)	(133,293)
Deferred:
United States	127,457	(3,323)	(4,629)
Foreign	27,473	32,300	19,319
State	9,855	1,173	873
Total deferred	164,785	30,150	15,563
Total income tax benefit (expense)	$ 66,813	$ (65,001)	$ (117,730)