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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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