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Note 13 - Share-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
   
Year Ended December 31
,
  
   
201
7
    
201
6
    
201
5
  
                         
Cost of sale
s
   $
292
     $
422
     $
412
  
Selling, general and administrative expens
e
    
908
      
1,387
      
1,331
  
Loss from operations of discontinued operation
s
    
-
      
(8
 )    
31
  
Tota
l
   $
1,200
     $
1,801
     $
1,774
  
Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Options Outstandin
g
    
Weighted-
Average
Exercise
Pric
e
    
Weighted-
Average Remaining Contractual
Lif
e
    
Aggregate
Intrinsic
Valu
e
  
   
 
 
 
  
 
 
 
  
(in years
)
    
(in thousands
)
  
Balance, December 31, 201
6
    
26,000
     $
24.97
      
 
      
 
  
Options grante
d
    
-
      
-
      
 
      
 
  
Options exercised
    
-
      
-
      
 
      
 
  
Options cancele
d
    
(2,000
 )    
34.77
      
 
      
 
  
Balance, December 31, 201
7
    
24,000
      
24.15
      
 
      
 
  
Exercisable, December 31, 201
7
    
24,000
      
24.15
      
2.24
     $
-
  
Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]
   
Number of
RSUs and
PSAs (1
)
    
Weighted-
Average Grant
Date Fair
Valu
e
  
                 
Unvested RSUs and PSAs as of December 31, 201
6
    
221,791
     $
17.36
  
RSUs and PSAs grante
d
    
-
      
-
  
Unvested PSAs cancele
d
    
(46,988
 )    
43.68
  
RSUs vested
    
(5,220
 )    
36.00
  
Unvested RSUs as of December 31, 201
7
    
169,583
      
9.50