Short-Term and Long-Term Investments - Summary of Available-for-Sale Securities (Detail) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
US Treasury Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Cost		$ 45,238,000
Gross Unrealized Losses		23,000
Estimated Fair Value		45,215,000
Failed Auction Security [Member]
Debt Securities, Available-for-sale [Line Items]
Cost	$ 3,000,000	3,000,000
Gross Unrealized Losses	378,000	361,000
Estimated Fair Value	$ 2,622,000	$ 2,639,000