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Workforce Reduction (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Employee Severance |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring costs |  | $ 3,380,000
Restructuring reserve |  | 0
Employee Severance | Research and Developement |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring costs |  | 3,026,000
Employee Severance | Selling, general and administrative |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring costs |  | $ 354,000
One-time Termination Benefits | Subsequent Event |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring costs | $ 1,264,000 |
One-time Termination Benefits | Research and Developement | Subsequent Event |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring costs | 1,201,000 |
One-time Termination Benefits | Selling, general and administrative | Subsequent Event |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring costs | $ 63,000 |

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