Summary of Intangible Asset Account Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Total Intangible Assets [Abstract]
Beginning balance, intangible assets, gross	$ 979,814	$ 981,160
Effect of change in exchange rates	(16,075)	2,359
Ending balance, intangible assets, gross	963,739	983,519
Beginning balance, intangible liabilities, gross	(23,900)	(23,900)
Effect of change in exchange rates	0	0
Ending balance, intangible liabilities, gross	$ (23,900)	$ (23,900)