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Investments and Fair Value Instruments - Summary of Fair Value of Investments Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets at Fair Value
Total Assets at Fair Value	$ 13,761	$ 18,620
Money Market Funds [Member]
Assets at Fair Value
Cash equivalents	8,672	18,620
Level 1 [Member]
Assets at Fair Value
Total Assets at Fair Value	13,761	18,620
Level 1 [Member] | Money Market Funds [Member]
Assets at Fair Value
Cash equivalents	8,672	18,620
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 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
Short-term Investments [Member] | Treasury Bills [Member]
Assets at Fair Value
Short-term investments	5,089
Short-term Investments [Member] | Level 1 [Member] | Treasury Bills [Member]
Assets at Fair Value
Short-term investments	5,089
Short-term Investments [Member] | Level 2 [Member] | Treasury Bills [Member]
Assets at Fair Value
Short-term investments	0
Short-term Investments [Member] | Level 3 [Member] | Treasury Bills [Member]
Assets at Fair Value
Short-term investments	$ 0

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

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.

+ References

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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