Cash Equivalents and Investments - Schedule of Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Available-for-sale [Line Items]
Available-for-sale Securities	$ 96,709	$ 93,239
Corporate securities
Available-for-sale [Line Items]
Available-for-sale Securities	62,730	61,385
Municipal Debt Securities [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	13,552	14,377
Federal Home Loan Securities [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	5,578	3,562
Certificates of Deposit [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	4,594	3,710
U.S. Treasury securities [Member]
Available-for-sale [Line Items]
Available-for-sale Securities	$ 10,255	$ 10,205