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Employee Benefit Plans (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Employee Benefit Plans |  |
Summary of net liability for severance payments | The net liability for severance payments as of (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, 2024 |  | December 31, 2023
Liability for severance payments, beginning | ​ | $ | 7,764 | ​ | $ | 7,997
Deposit | ​ |  | (276) | ​ |  | (308)
Liability for severance payments, ending | ​ | $ | 7,488 | ​ | $ | 7,689
​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | 2023 |  | 2022
Liability for severance payments | ​ | $ | 7,997 | ​ | $ | 7,248
Deposit | ​ |  | (308) | ​ |  | (343)
​ | ​ | $ | 7,689 | ​ | $ | 6,905
​

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- References No definition available. + Details
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