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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	Dec. 31, 2022
Assets at Fair Value
Total Assets at Fair Value	$ 5,410	$ 10,049	$ 18,620
Money Market Funds [Member]
Assets at Fair Value
Cash equivalents	2,770	4,925	18,620
Treasury Bills [Member]
Assets at Fair Value
Short-term investments	2,640	$ 5,124
Investment, Type [Extensible Enumeration]		Short-Term Investments [Member]
Level 1 [Member]
Assets at Fair Value
Total Assets at Fair Value	5,410	$ 10,049	18,620
Level 1 [Member] | Money Market Funds [Member]
Assets at Fair Value
Cash equivalents	2,770	4,925	18,620
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	0
Level 2 [Member] | Money Market Funds [Member]
Assets at Fair Value
Cash equivalents	0	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]
Level 3 [Member]
Assets at Fair Value
Total Assets at Fair Value	0	$ 0	0
Level 3 [Member] | Money Market Funds [Member]
Assets at Fair Value
Cash equivalents	0	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]

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Fair value portion of asset recognized for present right to economic benefit.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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