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Investments and Fair Value Instruments - Summary of Fair Value of Investments Securities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Assets at Fair Value    
Total Assets at Fair Value $ 5,410 $ 10,049
Money Market Funds [Member]    
Assets at Fair Value    
Cash equivalents 2,770 4,925
Treasury Bills [Member]    
Assets at Fair Value    
Short-term investments $ 2,640 $ 5,124
Investment, Type [Extensible Enumeration] Short-Term Investments [Member] Short-Term Investments [Member]
Level 1 [Member]    
Assets at Fair Value    
Total Assets at Fair Value $ 5,410 $ 10,049
Level 1 [Member] | Money Market Funds [Member]    
Assets at Fair Value    
Cash equivalents 2,770 4,925
Level 1 [Member] | Treasury Bills [Member]    
Assets at Fair Value    
Short-term investments $ 2,640 $ 5,124
Investment, Type [Extensible Enumeration] Short-Term Investments [Member] Short-Term Investments [Member]
Level 2 [Member]    
Assets at Fair Value    
Total Assets at Fair Value $ 0 $ 0
Level 2 [Member] | Money Market Funds [Member]    
Assets at Fair Value    
Cash equivalents 0 0
Level 2 [Member] | Treasury Bills [Member]    
Assets at Fair Value    
Short-term investments $ 0 $ 0
Investment, Type [Extensible Enumeration] Short-Term Investments [Member] Short-Term Investments [Member]
Level 3 [Member]    
Assets at Fair Value    
Total Assets at Fair Value $ 0 $ 0
Level 3 [Member] | Money Market Funds [Member]    
Assets at Fair Value    
Cash equivalents 0 0
Level 3 [Member] | Treasury Bills [Member]    
Assets at Fair Value    
Short-term investments $ 0 $ 0
Investment, Type [Extensible Enumeration] Short-Term Investments [Member] Short-Term Investments [Member]