Income Taxes - Expense (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current tax provision:
Federal	$ 1,022	$ 736	$ 610
State	1,403	1,880	1,259
Foreign	9,933	6,577	6,135
Current tax provision (benefit)	12,358	9,193	8,004
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	10,185	14,844	20,746
State	335	1,086	(1,127)
Foreign	(6,338)	895	(1,235)
Deferred tax expense (benefit)	4,182	16,825	18,384
Income tax provision	$ 16,540	$ 26,018	$ 26,388