Investments - Additional Information (Detail) $ in Thousands |
Dec. 31, 2021
USD ($)
Security
|
Dec. 31, 2020
USD ($)
Security
|
---|---|---|
Debt Securities, Available-for-sale [Line Items] | ||
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security | 10 | 37 |
Unrealized losses, other-than-temporary impairments | $ | $ 0 | $ 0 |