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Note 5 - Deferred Costs and Intangible Assets - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
2017 (Remainder) $ 648  
2018 1,284  
2019 1,056  
2020 812  
2021 812  
Thereafter 7,434  
Total $ 12,046 $ 13,953