Fair Value Measurement - Marketable Security Contractual Maturities (Detail) - USD ($) $ in Thousands	Mar. 31, 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
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	$ 1,700	17,606
Mature after one year through two years	0	0
Mature over two years	0	0
Fair Value	1,700	17,606
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	66,687	74,797
Mature after one year through two years	22,721	35,414
Mature over two years	0	0
Fair Value	89,408	110,211
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	639	1,907
Mature after one year through two years	1,311	4,833
Mature over two years	63,196	60,207
Fair Value	65,146	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	7,785	7,719
Mature after one year through two years	7,581	7,480
Mature over two years	3,031	3,192
Fair Value	18,397	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	333	338
Mature over two years	0	0
Fair Value	333	338
Municipal/provincial bonds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	1,987	1,971
Mature after one year through two years	0	0
Mature over two years	0	0
Fair Value	1,987	$ 1,971
Total
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mature within one year	78,798
Mature after one year through two years	31,946
Mature over two years	66,227
Fair Value	$ 176,971