Fair Value of Financial Assets and Liabilities - Schedule of financial assets and liabilities measured on recurring basis at fair value (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial assets:
Total financial assets	$ 52,238	$ 92,730
Contingent consideration [Member]
Financial liabilities:
Total financial liabilities	1,024	916
Fair value recurring basis [Member]
Financial assets:
Money market funds	7,125	15,635
Restricted cash	116	116
U.S. government securities	44,997	76,979
Total financial assets	52,238	92,730
Financial liabilities:
Total financial liabilities	1,024	916
Fair value recurring basis [Member] | Contingent consideration [Member]
Financial liabilities:
Contingent consideration	1,024	916
Fair value recurring basis [Member] | Level 1 [Member]
Financial assets:
Money market funds	7,125	15,635
Restricted cash	116	116
U.S. government securities	44,997	76,979
Total financial assets	52,238	92,730
Fair value recurring basis [Member] | Level 3 [Member]
Financial liabilities:
Total financial liabilities	1,024	916
Fair value recurring basis [Member] | Level 3 [Member] | Contingent consideration [Member]
Financial liabilities:
Contingent consideration	$ 1,024	$ 916