Investments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-Sale [Line Items]
Accrued interest	$ 0.8	$ 1.4
Interest Income [Member]
Debt Securities, Available-for-Sale [Line Items]
Gain (loss) in investments	$ 1.0