Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - Fair Value, Measurements, Recurring $ in Thousands	Dec. 31, 2022 USD ($)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Money market instruments	$ 415
Corporate bonds	0
Treasury bills	0
Asset-backed securities	0
Agency bonds	0
Sovereign bonds	0
Municipal bonds	0
Economic hedge forward contracts	0
Liabilities:
Economic hedge forward contracts	0
Significant Other Observable Inputs (Level 2)
Assets:
Money market instruments	0
Corporate bonds	538,495
Treasury bills	55,546
Asset-backed securities	60,429
Agency bonds	15,858
Sovereign bonds	1,924
Municipal bonds	624
Economic hedge forward contracts	27
Liabilities:
Economic hedge forward contracts	479
Unobservable Inputs (Level 3)
Assets:
Money market instruments	0
Corporate bonds	0
Treasury bills	0
Asset-backed securities	0
Agency bonds	0
Sovereign bonds	0
Municipal bonds	0
Economic hedge forward contracts	0
Liabilities:
Economic hedge forward contracts	$ 0