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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accrued Warranty Liability (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning balance $ 109 $ 96
Estimated future warranty expense 5 231
Warranty claims settled (27) (218)
Ending balance $ 87 $ 109