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Cash Equivalents and Investments - Schedule of Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available-for-sale [Line Items]
Available-for-sale Securities	$ 116,621	$ 104,485
Corporate securities
Available-for-sale [Line Items]
Available-for-sale Securities	50,602	57,878
U.S. Treasury securities [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	35,105	22,674
Municipal Debt Securities [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	21,508	14,649
Federal Home Loan Securities [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	6,673	5,670
Certificates of Deposit [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	$ 2,733	$ 3,614

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