Fair Value Measurement - Marketable Security Contractual Maturities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Total
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	$ 20,418	$ 30,264
Mature after one year through two years	2,476	2,098
Mature over two years	47,963	50,399
Fair Value	70,857	82,761
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	11,098	20,756
Mature after one year through two years	1,264	292
Mature over two years	202	0
Fair Value	12,564	21,048
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	0	238
Mature after one year through two years	1,212	1,806
Mature over two years	45,394	47,892
Fair Value	46,606	49,936
U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	8,994	8,929
Mature after one year through two years	0	0
Mature over two years	2,367	2,507
Fair Value	11,361	11,436
Foreign government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	326	341
Mature after one year through two years	0	0
Mature over two years	0	0
Fair Value	$ 326	$ 341