Fair Values on Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Fair value of financial assets and liabilities
Total short-term investments	$ 62,732	$ 61,959
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Money market funds
Fair value of financial assets and liabilities
Total short-term investments	$ 1,289	$ 1,773
United States government agency securities
Fair value of financial assets and liabilities
Total short-term investments	$ 24,377	$ 24,062
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Corporate debt securities
Fair value of financial assets and liabilities
Total short-term investments	$ 34,316	$ 33,371
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Mortgage-backed securities
Fair value of financial assets and liabilities
Total short-term investments	$ 2,750	$ 2,753
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Level 1
Fair value of financial assets and liabilities
Total short-term investments	$ 1,289	$ 1,773
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Level 1 | Money market funds
Fair value of financial assets and liabilities
Total short-term investments	$ 1,289	$ 1,773
Level 2
Fair value of financial assets and liabilities
Total short-term investments	$ 61,443	$ 60,186
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Level 2 | United States government agency securities
Fair value of financial assets and liabilities
Total short-term investments	$ 24,377	$ 24,062
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Level 2 | Corporate debt securities
Fair value of financial assets and liabilities
Total short-term investments	$ 34,316	$ 33,371
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]
Level 2 | Mortgage-backed securities
Fair value of financial assets and liabilities
Total short-term investments	$ 2,750	$ 2,753
Investment, Type [Extensible Enumeration]	Short-Term Investments [Member]	Short-Term Investments [Member]