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Note 9 - Share-based Compensation
 6 Months Ended
May 31, 2017
Notes to Financial Statements  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
NOTE
9
– SHARE-BASED COMPENSATION
 
    Three months ended May 31,   Six months ended May 31,
    2017   2016   2017   2016
Stock options   $
878
     $
736
     $
3,636
     $
4,404
  
Performance share unit plan    
1,119
      
1,076
      
2,229
      
2,065
  
Deferred share unit plan    
52
      
57
      
109
      
108
  
    $
2,049
     $
1,869
     $
5,974
     $
6,577
  
 
Stock options
 
A summary of stock options outstanding as of
May 31, 2017
and activity during the
six
-months ended
May 31, 2017
are as follows:
 
    Number of stock options (thousands)   Weighted- average exercise price per share   Weighted- average
remaining
contractual term
(years)		   Aggregate
intrinsic
value
November 30, 2016    
19,829
     $
3.33
      
 
      
 
  
Granted    
3,545
      
4.58
      
 
      
 
  
Exercised    
(546
 )    
4.18
      
 
      
 
  
Expired/Forfeited    
(1,683
 )    
7.57
      
 
      
 
  
May 31, 2017    
21,145
     $
3.18
      
2.45
     $
15,769
  
Vested and exercisable as of May 31, 2017    
17,623
     $
2.96
      
2.10
     $
17,052
  
 
The following table summarizes other stock option-related information:
 
    Six months ended May 31,
    2017   2016
Weighted-average assumptions used to value stock option awards:                
Expected volatility    
50
 %    
54
 %
Expected term of options (years)    
3
      
3
  
Expected dividend rate    
—
      
—
  
Risk-free interest rate    
1.20
 %    
0.50
 %
Expected forfeiture rate    
2.5
 %    
3.0
 %
Weighted-average grant-date fair value   $
2.14
     $
1.37
  
Intrinsic value of options exercised   $
942
     $
1,264
  
Cash received from options exercised    
—
      
—
  
 
As of
May 31, 2017,
the Company had
$2,731
of unrecognized compensation cost related to
3,522,051
non-vested stock options expected to be recognized and vest over a period of approximately
18
months.
 
Performance share units
 
A summary of PSU awards outstanding as of
May 31, 2017
and activity during the
six
-months ended
May 31, 2017
are as follows:
 
    Number of PSU awards (thousands)   Weighted- average grant day fair value per award   Aggregate
intrinsic
value
November 30, 2016    
2,619
     $
3.15
      
 
  
Granted    
940
      
4.58
      
 
  
Vested    
(1,556
 )    
2.83
      
 
  
Performance adjustment    
179
      
2.83
      
 
  
Forfeited    
(2
 )    
4.58
      
 
  
May 31, 2017    
2,180
     $
4.10
     $
371
  
 
As of
May 31, 2017,
the Company had
$4,520
of unrecognized compensation cost related to non-vested PSU awards expected to be recognized and vest over a period of approximately
18
months.
 
The following table summarizes other PSU-related information:
 
    Six months ended May 31,
    2017   2016
Performance multiplier on PSUs vested    
113
 %    
140
 %
Common shares issued (thousands)    
1,556
      
2,526
  
Total fair value of common shares issued   $
4,506
     $
5,704