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Leases | 12 Months Ended
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Dec. 31, 2024
Leases [Abstract] |
Leases | 9. Leases On September 15, 2020, the Company entered into a Sublease Termination Agreement (the "Sublease Termination Agreement") to terminate its sublease of 15,700 rentable square feet, of its leased premises under the Head Lease. Under the terms of the Sublease Termination Agreement, the subtenant was relieved of its obligation to provide future cash rental payments to the Company. The agreements requiring the former subtenant to provide licensed rooms and services to the Company free of charge through the original sublease term survived the sublease termination. The Company gained access to the licensed rooms and services beginning in the third quarter of 2021. The letter of credit security deposit related to the sublease was released. The Company determined that the Sublease Termination Agreement constituted a non-monetary exchange under ASC 845 Nonmonetary Transactions (“ASC 845”) where, in return for the free rooms and the services, the Company agreed to terminate its rights and obligations under the sublease agreement. In accordance with ASC 845, the Company determined that the accounting for the transaction should be based on the fair value of assets or services involved. During the year ended December 31, 2020, the Company estimated the fair value of the rooms and services to be approximately $1.5 million and $2.9 million, respectively. The Company determined that the licensed rooms represent a lease under ASC Topic 842 Leases. The Company obtained control of the rooms in the third quarter of 2021 and the prepaid rooms balance of approximately $1.4 million was reclassified from other assets to a ROU asset. The related lease expense is recognized on a straight-line basis over the lease term of 8.88 years. The Company recorded $0.2 million of lease expense during the year ended December 31, 2023. The Company determined that the licensed services represent a non-lease component, which is recognized separately from the lease component for this asset class. The expense related to the licensed services is recognized on a straight-line basis over the period the services are received. The Company recorded $0.1 million for the year ended December 31, 2023. Both the lease expense and services expense are recognized as a component of research and development costs in the consolidated statements of operations and comprehensive loss. After the closing of the Asset Purchase Agreement, the Company had no plans in the foreseeable future to use the licensed rooms and the Company is restricted from subleasing the rooms. In August 2023, the ROU asset and other assets were fully impaired, and the Company recognized a $3.3 million impairment loss during the year ended December 31, 2023. No lease expense or services expense was recognized during the year ended December 31, 2024.

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