Financial Instruments - Schedule of Financial Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Assets measured at fair value	$ 112,128	$ 370,532
Liabilities
Financial liabilities measured at fair value	1,498	1,285
Liability for Contingent Consideration
Liabilities
Financial liabilities measured at fair value	1,498	1,285
Level 2
Assets
Assets measured at fair value	112,128	370,532
Level 3
Liabilities
Financial liabilities measured at fair value	1,498	1,285
Level 3 | Liability for Contingent Consideration
Liabilities
Financial liabilities measured at fair value	1,498	1,285
Commercial paper
Assets
Assets measured at fair value	61,387	161,011
Commercial paper | Level 2
Assets
Assets measured at fair value	61,387	161,011
GICs
Assets
Assets measured at fair value	50,741	209,521
GICs | Level 2
Assets
Assets measured at fair value	$ 50,741	$ 209,521