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Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income, Other Expenses, and Change in Accounting Pronouncements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive loss:
Stockholders' equity, beginning balance	$ 1,862,463,000	$ 2,285,134,000	$ 1,936,671,000
Other comprehensive (loss) income:
Stockholders' equity, ending balance	1,464,227,000	1,862,463,000	2,285,134,000
Foreign Currency Translation Adjustment
Other comprehensive loss:
Stockholders' equity, beginning balance	(264,691,000)	(103,989,000)	(212,573,000)
Other comprehensive (loss) income:
Foreign currency translation adjustment	11,866,000	(160,702,000)	108,584,000
Change in fair value of derivative instruments	0	0
Total other comprehensive (loss) income	11,866,000	(160,702,000)	108,584,000
Stockholders' equity, ending balance	(252,825,000)	(264,691,000)	(103,989,000)
Change in Fair Value of Derivative Instruments
Other comprehensive loss:
Stockholders' equity, beginning balance		0	0
Other comprehensive (loss) income:
Foreign currency translation adjustment			0
Total other comprehensive (loss) income			0
Stockholders' equity, ending balance			0
Change in Fair Value of Derivative Instruments
Other comprehensive loss:
Stockholders' equity, beginning balance	(973,000)
Other comprehensive (loss) income:
Foreign currency translation adjustment	0	0
Change in fair value of derivative instruments	(8,783,000)	(973,000)
Total other comprehensive (loss) income	(8,783,000)	(973,000)
Stockholders' equity, ending balance	(9,756,000)	(973,000)
Total
Other comprehensive loss:
Stockholders' equity, beginning balance	(265,664,000)	(103,989,000)	(212,573,000)
Other comprehensive (loss) income:
Foreign currency translation adjustment	11,866,000	(160,702,000)	108,584,000
Change in fair value of derivative instruments	(8,783,000)	(973,000)
Total other comprehensive (loss) income	3,083,000	(161,675,000)	108,584,000
Stockholders' equity, ending balance	$ (262,581,000)	$ (265,664,000)	(103,989,000)
Disposal Group, Not Discontinued Operations | Russia and Ukraine Divestment
Other comprehensive (loss) income:
Cumulative translation adjustment			$ 29,100,000

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