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Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Product Warranties    
Warranty liability at beginning of year $ 110 $ 5
Accruals 83 105
Payments (13)  
Warranty liability at end of period $ 180 $ 110