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Note 16 - Commitments (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Year   Operating Leases
     
     
2019   $
1,304
 
2020    
471
 
2021    
66
 
         
Total minimum lease payments   $
1,841
 
Contractual Obligation, Fiscal Year Maturity [Table Text Block]
Year    
     
     
2019   $
488
 
2020    
268
 
2021    
151
 
         
Total   $
907