Income Taxes - Components of Current and Deferred Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 10,311	$ 15,805	$ 19,007
State and local	2,271	3,202	2,708
Foreign	(1,687)	1,482	440
Total current	10,895	20,489	22,155
Deferred:
Federal	(246)	(5,318)	7,947
State and local	(54)	(1,077)	1,105
Foreign	(49)	312	(214)
Total deferred	(349)	(6,083)	8,838
Income tax expense	$ 10,546	$ 14,406	$ 30,993