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Note 9 - Other Current Assets - Other Current Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Prepaid expenses | $ 576 |  | $ 571
Contract assets | 839 | $ 825 | 0
Other | 3,340 |  | 1,432
Total | $ 4,755 |  | $ 2,003

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