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Note 9 - Stock-based Compensation Plans and Warrants (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Shares
    
Weighted-
Average
Exercise Price
    
Average
Remaining
Contractual
Term
    
Aggregate
Intrinsic
Value
($000
’s)
  
Outstanding at January 1, 201
5
    
822,500
 
   $
11.82
      
3.4
     $
7,181
  
Granted
    
-
 
   $
-
      
 
      
 
  
Forfeited, Expired or canceled
    
(315,000
)
   $
12.09
      
-
     $
3,247
  
Exercised
    
-
 
   $
-
      
 
      
 
  
                                 
Outstanding at December 31, 201
5
    
507,500
 
   $
11.66
      
4.3
     $
3,934
  
Granted
    
-
 
   $
-
      
 
      
 
  
Forfeited, Expired or canceled
    
-
 
   $
-
      
 
      
 
  
Exercised
    
-
 
   $
-
      
 
      
 
  
                                 
Outstanding at December 31,
2016
    
507,500
 
   $
11.66
      
3.3
     $
3,934
  
Granted
    
-
 
   $
-
      
 
      
 
  
Forfeited,
Expired or canceled
    
-
 
   $
-
      
 
      
 
  
Exercised
    
-
 
   $
-
      
 
      
 
  
                                 
Outstanding at December 31, 201
7
    
507,500
 (a)
   $
11.66
      
2.3
     $
3,394
  
                                 
Options exercisable at December 31, 201
7
    
507,500
 
   $
11.66
      
2.3
     $
3,394
  
                                 
Weighted-average years of remaining contractual life of options outstanding at December 31, 201
7
    
2.3
 
    
 
      
 
      
 
  
Schedule of Nonvested Share Activity [Table Text Block]
   
 
 
 
  
Weighted-
  
   
 
 
 
  
Average
  
   
 
 
 
  
Grant-date
  
   
Shares
    
Fair Value
  
                 
                 
Nonvested at December 31,
2015
    
76,850
     $
8.54
  
Granted
    
84,383
     $
7.23
  
Forfeited or canceled
    
-
     $
-
  
Vested
    
(143,868
)
   $
8.11
  
                 
Nonvested at December 31,
2016
    
17,365
     $
5.76
  
Granted
    
231,762
     $
22
  
Forfeited or canceled
    
-
     $
-
  
Vested
    
(240,433
)
   $
12.66
  
                 
Nonvested at December 31, 201
7
    
8,694
     $
13.81