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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit) at statutory rate	$ (19,673)	$ (30,289)	$ (63,603)
Branch profits tax	(4,267)	(4,871)	(3,805)
State taxes, net of federal benefit	(27)	2,405	(674)
Restricted stock units tax shortfall	1,025	1,651	2,758
Taxes on foreign earnings at less than the U.S. statutory rate	13,095	(22,464)	30,737
Effect of tax rate change	(2,929)	23,843	0
Effect of moving activity to higher tax rate jurisdiction	(14,620)	0	0
Management fee charged to international operations	1,515	1,213	0
Tax effect of TRA derecognition	0	46,874	0
Establishment of valuation allowances	22,892	51,911	2,644
Return-to-provision adjustments	(521)	3,551	(1,130)
Noncontrolling interest	0	0	7,367
Other	560	(906)	63
Total income tax expense (benefit)	$ (2,950)	$ 72,918	$ (25,643)

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