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Note 8 - Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Options
 
Shares
 
 
Weighted
Average
Exercise
Price per
Share
 
 
Weighted
Average
Remaining
Contractual
Term
(years)
 
 
Aggregate
Intrinsic
Value
 
Outstanding at July 1, 2014
    
12,333
     $
17.34
      
25.86
     $
—
  
Granted
    
33,333
      
7.50
      
—
      
—
  
Exercised
    
—
      
—
      
—
      
—
  
Forfeited or expired
    
(2,666
)
    
22.26
      
—
      
—
  
Outstanding at June 30, 2015
    
43,000
      
9.42
      
48.54
      
—
  
Granted
    
—
      
—
      
—
      
—
  
Exercised
    
—
      
—
      
—
      
—
  
Forfeited or expired
    
(3,000
)
    
18.60
      
—
      
—
  
Outstanding at December 31, 2015
    
40,000
      
8.70
      
47.94
      
—
  
Granted
    
—
      
—
      
—
      
—
  
Exercised
    
—
      
—
      
—
      
—
  
Forfeited, canceled or expired
    
(16,667
)
    
7.62
      
—
      
—
  
Outstanding at December 31, 2016
    
23,333
      
9.49
      
6.43
      
—
  
Exercisable at December 31, 2016
    
23,333
     $
9.49
      
6.43
     $
—
  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Restricted Stock Awards
 
Shares
 
 
Weighted
Average
Fair Value
Price per
Share
 
Nonvested at July 1, 2015
    
16,667
     $
9.66
  
Granted (1)
    
—
      
 
  
Vested
    
—
      
 
  
Forfeited or expired (2)
    
(16,667
)
    
(9.66
)
Nonvested at December 31, 2015
    
—
     $
—
  
Granted (1)
    
—
      
—
  
Vested
    
—
      
—
  
Forfeited or expired (2)
    
—
      
—
  
Nonvested at December 31, 2016
    
—
     $
—