Income Taxes - Summary of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. federal	$ (3,380)	$ 48,270	$ 32,080
U.S. state and local	3,965	6,537	1,262
Foreign	53,111	45,901	35,480
UBT	1,278	(1,953)	4,092
Provision for income taxes, Current	54,974	98,755	72,914
Deferred:
U.S. federal	(6,727)	(31,425)	19,558
U.S. state and local	6,092	149	365
Foreign	506	6,671	(353)
UBT	(1,674)	1,970	288
Provision for income taxes, Deferred	(1,803)	(22,635)	19,858
Provision for income taxes	$ 53,171	$ 76,120	$ 92,772