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Note 1 - Organization and Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Year Ended
  
   
December 31,
  
(In thousands
, except share and earnings per share data
)
  
2018
    
2017
  
Numerator:
                
Net income (loss) attributable to common stockholders
   $
2,927
     $
(2,728
)
                 
Denominator:
                
Weighted average basic shares outstanding
    
16,256,465
      
13,263,881
  
Effect of dilutive securities
    
5,370,813
      
—
  
Weighted average diluted shares
    
21,627,278
      
13,263,881
  
                 
Basic earnings per share
   $
0.18
     $
(0.21
)
Diluted earnings per share
   $
0.14
     $
(0.21
)
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Assumptions
  
2017
  
Risk-free rate
    
2.12
%
Annual rate of dividends
  
 
––
  
Historical volatility
    
74
%
Expected life (in years)
    
5.7