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Note 4 - Balance Sheet Information - Other Current Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Compensation $ 3,992 $ 3,715
Professional fees 793 432
Warranty costs 228 185
Customer related costs 1,992 1,093
Interest 369 46
Accrued income taxes 246 286
Other 2,050 1,721
Total $ 9,670 $ 7,478