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Note 5 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Property and equipment $ 7,750 $ 7,370
Less: accumulated depreciation and amortization 4,131 3,318
Property and equipment, net 3,619 4,052
Equipment and Furniture [Member]    
Property and equipment 912 1,045
Computers and Systems [Member]    
Property and equipment 5,981 5,521
Leasehold Improvements [Member]    
Property and equipment $ 857 $ 804