Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents (money market funds)	$ 5,374	$ 13,463
Mutual funds	127,551	160,441
Derivative financial instruments	14,989	16,688
Total	147,914	190,592
Liabilities
Derivative financial instruments	3,637	464
Contingent consideration	9,000
Total	12,637	464
(Level 1)
Assets
Cash and cash equivalents (money market funds)	5,374	13,463
Mutual funds	127,551	160,441
Derivative financial instruments	0	0
Total	132,925	173,904
Liabilities
Derivative financial instruments	0	0
Contingent consideration	0
Total	0	0
(Level 2)
Assets
Cash and cash equivalents (money market funds)	0	0
Mutual funds	0	0
Derivative financial instruments	14,989	16,688
Total	14,989	16,688
Liabilities
Derivative financial instruments	3,637	464
Contingent consideration	0
Total	3,637	464
(Level 3)
Assets
Cash and cash equivalents (money market funds)	0	0
Mutual funds	0	0
Derivative financial instruments	0	0
Total	0	0
Liabilities
Derivative financial instruments	0	0
Contingent consideration	9,000
Total	$ 9,000	$ 0