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Note 7 - Intangible Assets (Details) - Future Estimated Annual Amortization Expense
$ in Thousands
Dec. 31, 2015
USD ($)
Future Estimated Annual Amortization Expense [Abstract]  
2016 $ 1,207
2017 1,064
2018 957
2019 715
2020 43
Thereafter 0
Total $ 3,986