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Lease Agreement - Leased facilities (Details) $ in Thousands | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2023 USD ($) | Mar. 31, 2024 USD ($) facility | Dec. 31, 2023 USD ($) | Nov. 30, 2023 | Nov. 10, 2022 USD ($)
Leases |  |  |  |  |
Operating leases, number of leased facilities | facility |  | 1 |  |  |
Operating lease right-of-use assets |  | $ 364 | $ 378 |  |
Operating lease liabilities |  | 374 | 400 |  |
Current operating lease liabilities |  | 55 | 54 |  |
Non-current operating lease liabilities |  | $ 319 | $ 335 |  |
Leased facilities, Emeryville, California, with lease expiration of July 31, 2023 |  |  |  |  |
Leases |  |  |  |  |
Period of lease extension | 5 months |  |  |  |
Existence of option to extend | false |  |  |  |
Adjustment to right of use asset for lease modification | $ 100 |  |  |  |
Leased facilities, Emeryville, California, different location than previous lease |  |  |  |  |
Leases |  |  |  |  |
Lease term |  |  |  | 65 months | 65 months
Operating lease right-of-use assets |  |  |  |  | $ 400
Operating lease liabilities |  |  |  |  | $ 400

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