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Note 3 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 30, 2016
Research and development $ 547 $ 165
Inventory 408 547
Regulatory, clinical and quality 405 640
Operations engagement fee 200 600
Sales and marketing 164
Warranty reserve 154 98
Deferred revenue 148
Legal 125 98
Information technology system and infrastructure implementations 120 327
Interest 102 99
Sales and use tax 55 56
Travel and entertainment 285
Accrued other 425 440
Total accrued liabilities $ 2,853 $ 3,355