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Note 7 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accrued salaries and other compensation $ 1,072 $ 1,098
Sales and marketing programs 435 319
Product warranty 245 246
Other accrued liabilities 91 231
Total $ 1,843 $ 1,894