Income Taxes Income Taxes - Income Tax Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ (39,025,000)	$ (6,245,000)	$ 15,171,000
Effective Income Tax Rate Reconciliation, Deduction, Extraterritorial Income Exclusion, Amount	0	(222,019,000)	0
Effective Income Tax Rate Reconciliation, Repatriation Tax	8,790,000	0	0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0	(23,124,000)	0
Valuation Allowances and Reserves, Additions for Charges to Other Accounts	38,415,000	89,217,000	4,200,000
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	475,000	(21,163,000)	(1,766,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount	2,135,000	3,112,000	0
Effective Income Tax Rate Reconciliation, Uncertain Tax Position	12,644,000	(836,000)	680,000
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	3,060,000.000	(3,184,000.000)	475,000.000
Income Tax Expense (Benefit)	$ 26,494,000	$ (184,242,000)	$ 18,760,000