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Leases - Schedule of Leases (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Assets |  |  |  |  |
Operating lease assets | $ 306 |  | $ 306 |  | $ 792
Total leased assets | 306 |  | 306 |  | 792
Liabilities |  |  |  |  |
Current - Operating | 346 |  | 346 |  | 852
Noncurrent - Operating | 0 |  | 0 |  | 155
Total leased liabilities | 346 |  | 346 |  | $ 1,007
Lease Cost |  |  |  |  |
Net lease cost | $ 33 | $ 83 | $ 284 | $ 253 |
Lease Term and Discount Rate |  |  |  |  |
Weighted-average remaining lease term (years) | 8 months 12 days |  | 8 months 12 days |  | 2 years 3 months 18 days
Weighted-average discount rate | 6.50% |  | 6.50% |  | 6.00%
SG&A and R&D Expenses [Member] |  |  |  |  |
Lease Cost |  |  |  |  |
Operating lease cost | $ 172 | 191 | $ 678 | 572 |
Sublease income | (142) | (111) | (404) | (329) |
SG&A Expenses [Member] |  |  |  |  |
Lease Cost |  |  |  |  |
Short term lease cost | $ 3 | $ 3 | $ 10 | $ 10 |

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- Definition Amount of lease cost recognized by lessee for lease contract. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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