Fair Value Measurement - Marketable Security Contractual Maturities (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year		$ 104,000
Mature after one year through two years		48,065
Mature over two years		63,399
Fair Value		215,464
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	$ 55,613	74,797
Mature after one year through two years	16,099	35,414
Mature over two years	0	0
Fair Value	71,712	110,211
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	0	1,907
Mature after one year through two years	910	4,833
Mature over two years	61,010	60,207
Fair Value	61,920	66,947
U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	7,851	7,719
Mature after one year through two years	7,538	7,480
Mature over two years	2,818	3,192
Fair Value	18,207	18,391
Foreign government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	0	0
Mature after one year through two years	331	338
Mature over two years	0	0
Fair Value	331	338
Municipal/provincial bonds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year		1,971
Mature after one year through two years		0
Mature over two years		0
Fair Value		1,971
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year		17,606
Mature after one year through two years		0
Mature over two years		0
Fair Value		$ 17,606
Total
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	63,464
Mature after one year through two years	24,878
Mature over two years	63,828
Fair Value	$ 152,170