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Note 8 - Accrued Expenses and Long-term Liabilities - Major Components of Accrued Expenses and Long-term Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Mar. 31, 2022
Accrued Expenses:      
Accrued vacation $ 314 $ 271  
Accrued salaries and bonus 1,259 1,498  
Vendor accruals 77 75  
Accrued warranty 6 6  
Other accrued expense 221 612 $ 400
Total accrued expenses 1,877 2,462  
Other Long-Term Liabilities:      
Long-term deferred tax liability 1,926 1,290  
Acquired long-term liabilities 3,403 3,380 $ 3,400
Deferred revenue 759 800  
Noncurrent operating lease liabilities, included in long-term liabilities 765 971  
Note payable 148 199  
Other long-term liabilities 0 216  
Total long-term liabilities $ 7,001 $ 6,856