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Note 8 - Share-based Compensation (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 
 
Three Months Ended June 30,
 
 
Six Months Ended June 30,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
                                 
Cost of sales
  $ 67     $ 99     $ 39     $ 180  
Selling, general and administrative expenses
    568       384       774       953  
Total
  $ 635     $ 483     $ 813     $ 1,133  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
 
 
Options
Outstanding
 
 
Weighted
Average
Exercise Price
per Share
 
 
Weighted
Average
Remaining
Contractual
Life
 
 
Aggregate
Intrinsic Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(In thousands)
 
Balance, January 1, 2016
    28,000     $ 25.21                  
Options granted
    -       -                  
Options exercised
    -       -                  
Options cancelled
    (2,000 )     28.31                  
Balance, June 30, 2016
    26,000       24.97       3.53     $ -  
Exercisable, June 30, 2016
    26,000       24.97       3.53     $ -  
Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]
 
 
Number of RSUs
and PSAs
 
 
Weighted Average
Grant Date Fair Value
 
Balance, January 1, 2016
    127,852     $ 38.87  
RSUs and PSAs granted
    161,080       9.38  
RSUs and PSAs vested
    (12,212 )     31.50  
RSUs and PSAs canceled
    (63,126 )     36.93  
Balance, June 30, 2016
    213,594       17.62