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Leases - Schedule of Finance and Operating Lease Assets and Lease Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Current |  |  |
Operating | $ 0 | $ 0 | $ 0
Finance | 1 | 1 | 1
Long-term |  |  |
Operating | $ 2,200 | $ 2,262 | $ 2,454
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Operating Lease Right Of Use Asset Non Current | Operating Lease Right Of Use Asset Non Current | Operating Lease Right Of Use Asset Non Current
Finance | $ 37 | $ 43 | $ 96
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Finance Lease Right Of Use Asset Non Current | Finance Lease Right Of Use Asset Non Current | Finance Lease Right Of Use Asset Non Current
Total right-of-use assets | $ 2,238 | $ 2,306 | $ 2,551
Current |  |  |
Operating | 219 | 222 | 205
Finance | 6 | 6 | 377
Noncurrent |  |  |
Operating | 2,057 | 2,111 | 2,300
Finance | 90 | 94 | 98
Total lease liabilities | $ 2,372 | $ 2,433 | $ 2,980

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