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Lease - Additional Information (Details) $ in Thousands | Aug. 17, 2023 USD ($) ft² | Dec. 15, 2020 USD ($) ft² | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Aug. 23, 2023 USD ($) ft²
--- | --- | --- | --- | --- | ---
Lease |  |  |  |  |
Operating lease right-of-use assets |  |  | $ 1,419 | $ 1,314 |
Lease liabilities |  |  | $ 1,478 |  |
Tennieh LLC |  |  |  |  |
Lease |  |  |  |  |
Area of property | ft² |  | 9,800 |  |  |
Term of contract |  | 5 years |  |  |
Security deposit |  | $ 400 |  |  |
Expiration date |  | Jan. 31, 2027 |  |  |
Operating lease right-of-use assets |  | $ 800 |  |  |
Dropbox, Inc. |  |  |  |  |
Lease |  |  |  |  |
Area of property | ft² | 6,713 |  |  |  |
Term of contract | 2 years |  |  |  |
Security deposit | $ 100 |  |  |  |
Expiration date | Dec. 31, 2026 |  |  |  |
Operating lease right-of-use assets | $ 100 |  |  |  |
Cambridge Redevelopment Authority |  |  |  |  |
Lease |  |  |  |  |
Area of property | ft² |  |  |  |  | 4,020
Term of contract |  |  |  |  | 3 years
Cambridge Redevelopment Authority | Minimum |  |  |  |  |
Lease |  |  |  |  |
Security deposit |  |  |  |  | $ 100

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- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
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- Definition Term of lessee's 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/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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