Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Current:
Federal	$ 10,887	$ 9,948	$ 18,653	$ 16,472
State and local	3,917	1,957	6,827	3,350
Foreign	3,741	3,273	7,188	6,044
Total current provision	18,545	15,178	32,668	25,866
Deferred:
Federal	1,475	(176)	3,380	1,426
State and local	266	(31)	618	218
Foreign	263	(167)	769	(8)
Total deferred provision	2,004	(374)	4,767	1,636
Provision for income taxes	$ 20,549	$ 14,804	$ 37,435	$ 27,502
Effective tax rate	19.70%	23.50%	19.10%	21.50%