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v3.25.4

LEASES - Narrative (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2023 USD ($) | Dec. 31, 2025 USD ($) ft² extension_option | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, remaining lease term (in years) |  | 8 months 12 days |  |
Operating lease, cost |  | $ 5,000 | $ 5,000 | $ 5,700
Operating lease, payments |  | 5,800 | 5,700 | 5,900
Loss on termination of lease |  | $ 0 | 0 | 524
Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, incremental borrowing rates based on remaining lease term |  | 6.65% |  |
Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, incremental borrowing rates based on remaining lease term |  | 6.94% |  |
Cambridge |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Area of property leased (in square feet) | ft² |  | 65,167 |  |
Cambridge | Letter of Credit |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Total security deposit in connection with lease |  | $ 1,700 | 1,700 |
Cambridge | Office And Storage Space |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Leased area subject to expiration | ft² |  | 59,216 |  |
Operating lease extensions (in extension options) | extension_option |  | 1 |  |
Lease extension period |  | 5 years |  |
Cambridge | Laboratory Space |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Leased area subject to expiration | ft² |  | 5,951 |  |
Operating lease extensions (in extension options) | extension_option |  | 1 |  |
Lease extension period |  | 2 years |  |
Boston | Office Space |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Area of property leased (in square feet) | ft² |  | 27,924 |  |
Payments to transfer rights and obligations of operating lease | $ 1,300 |  |  |
Boston | Office Space | Keryx Biopharmaceuticals, Inc. |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Sublease rent payments received |  | $ 0 | $ 0 | $ 300

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- Definition Amount of gain (loss) on termination of lease before expiration of lease term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479092/842-20-40-1 + Details
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