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Fixed Assets - Summary (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Fixed Assets |  |  |
Office furniture and equipment | $ 60 |  | $ 60
Leasehold improvements | 43 |  | 43
Fixed assets, gross | 103 |  | 103
Accumulated depreciation and amortization | (70) |  | (63)
Fixed assets, net, after accumulated amortization | 33 |  | 40
Operating lease ROU assets, net | 214 |  | 235
Total | 247 |  | $ 275
Depreciation and amortization expense | $ 7 | $ 40 |

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