XML 25 R33.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-based Compensation (Tables)
12 Months Ended
Aug. 31, 2012
Stock-based Compensation  
Schedule of total employee stock-based compensation expense recognized in the consolidated statements of operations

 

 
  Years Ended August 31,  
 
  2012   2011   2010  

Stock options and stock units to employees

  $ 1,921   $ 862   $ 131  

Stock units to directors

    578     823      

Stock options to nonemployees

    6     (27 )   54  

Other stock-based compensation activity

    111     127     62  
               

 

  $ 2,616   $ 1,785   $ 247  
               

        

Summary of weighted-average assumptions for grants of options used for estimating the fair value of each employee stock option

 

 

 
  Years Ended
August 31,
 
 
  2012   2011   2010  

Dividend rate

        0 %   0 %

Risk-free interest rate

        2.2 %   2.7 %

Expected term (in years)

        6.3     6.2  

Expected volatility

        48.1 %   69.3 %

        

Summary of the option activity and changes under the 2005 Plan and 2010 Plan

 

 

 
  Number of
Stock Options
Outstanding
  Weighted-
Average
Exercise
Price
  Weighted-
Average
Remaining
Contractual
Life (Years)
  Aggregate
Intrinsic
Value
 
 
  (In thousands)
   
   
  (In thousands)
 

Outstanding—September 1, 2009

    950   $ 0.56     7.6   $ 41  

Granted

    138     1.68              

Forfeited

    (25 )   0.84              

Exercised

    (556 )   0.42              
                         

Outstanding—August 31, 2010

    507     1.12     8.1     4,766  

Granted

    453     14.31              

Forfeited

    (85 )   6.95              

Exercised

    (100 )   0.78              
                         

Outstanding—August 31, 2011

    775     8.20     8.5     1,456  

Granted

                     

Forfeited

    (118 )   11.64              

Exercised

    (81 )   0.86              
                         

Outstanding—August 31, 2012

    576   $ 8.54     7.6   $ 263  
                         

Vested and expected to vest—August 31, 2012

    521   $ 8.23     7.5   $ 257  

Exercisable—August 31, 2012

    235   $ 5.74     6.8   $ 173  

        

Summary of additional information regarding the Company's stock options outstanding and vested

 Additional information regarding the Company's stock options outstanding and vested as of August 31, 2012 is summarized below:

 
  Options Outstanding   Options Exercisable  
Exercise Prices
  Number   Weighted-
Average
Remaining
Contractual
Term
(Years)
  Weighted-
Average
Exercise Price
per Share
  Number   Weighted-
Average
Exercise Price
per Share
 
 
  (In thousands)
   
   
  (In thousands)
   
 

$0.21 - $0.42

    15     3.3   $ 0.30     15   $ 0.30  

$0.84 - $4.89

    264     6.9     1.74     141     1.27  

$6.08 - $15.61

    97     8.7     6.82     28     7.12  

$19.00 - $19.00

    200     8.3     19.00     51     19.00  
                             

$0.21 - $19.00

    576     7.6   $ 8.54     235   $ 5.74  
                             
Summary of the restricted stock unit awards outstanding and changes under the 2010 Plan

 

 

 
  Number of
Stock Units
Outstanding
  Weighted-
Average
Grant Date
Fair Value
 
 
  (In thousands)
   
 

Outstanding—September 1, 2010

      $  

Granted

    346     17.17  

Vested

         

Forfeited

    (29 )   19.00  
             

Outstanding—August 31, 2011

    317     17.00  

Granted

    860     3.46  

Vested

    (127 )   18.10  

Forfeited

    (120 )   10.67  
             

Outstanding—August 31, 2012

    930   $ 5.15  
             

        

Employees
 
Stock-based Compensation  
Schedule of total employee stock-based compensation expense recognized in the consolidated statements of operations

 

 
  Years Ended
August 31,
 
 
  2012   2011   2010  

Cost of revenues

  $ 952   $ 523   $ 52  

Research and development

    366     184     33  

Selling, general and administrative

    603     155     46  
               

 

  $ 1,921   $ 862   $ 131