Fair Value of Financial Instruments - Summary of Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial assets carried at fair value:
Cash equivalents, fair value disclosure		$ 24,612
Total financial assets	$ 178,605	200,344
Level 1 [Member]
Financial assets carried at fair value:
Cash equivalents, fair value disclosure		10,498
Total financial assets	6,160	10,498
Level 2 [Member]
Financial assets carried at fair value:
Cash equivalents, fair value disclosure		14,114
Total financial assets	172,445	189,846
Level 3 [Member]
Financial assets carried at fair value:
Cash equivalents, fair value disclosure		0
Government money market funds [Member]
Financial assets carried at fair value:
Cash equivalents, fair value disclosure	6,160
Government money market funds [Member] | Level 1 [Member]
Financial assets carried at fair value:
Cash equivalents, fair value disclosure	6,160
Certificates of deposit [Member]
Financial assets carried at fair value:
Short-term investments, available for sale	504	504
Certificates of deposit [Member] | Level 2 [Member]
Financial assets carried at fair value:
Short-term investments, available for sale	504	504
Corporate debt securities, available-for-sale [Member]
Financial assets carried at fair value:
Short-term investments, available for sale	136,491	143,196
Corporate debt securities, available-for-sale [Member] | Level 2 [Member]
Financial assets carried at fair value:
Short-term investments, available for sale	136,491	143,196
Commercial paper, available-for-sale [Member]
Financial assets carried at fair value:
Short-term investments, available for sale	35,450	32,032
Commercial paper, available-for-sale [Member] | Level 2 [Member]
Financial assets carried at fair value:
Short-term investments, available for sale	$ 35,450	$ 32,032