Stock-Based Compensation (Tables)
 3 Months Ended
Nov. 30, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Schedule of Share Based Compensation Stock Options Activity

A summary of the stock option activity for the three months ended November 30, 2012, is as follows:

 

     Number of
Shares		     Weighted
Average
Exercise Price		      Weighted
Average
Remaining
Term (in years)		      Aggregate
Intrinsic Value		  

Outstanding Balance, August 31, 2012

      1,824,916      $ 10.94         

Granted

      25,000        7.60         

Exercised

      —          —           

Cancelled

      (48,191 )      13.92         
  

 

 

          

Outstanding Balance, November 30, 2012

      1,801,725        10.82         3.86       $ 1,394,000   
  

 

 

          

Options Exercisable at November 30, 2012

      1,005,225      $ 14.90         2.05       $ 50,300   
Schedule of Share Based Payment Award Stock Options Valuation Assumptions

The Company estimated the fair value of stock options granted during the first three months of fiscal 2013 using the following weighted-average assumptions and resulting in the following weighted-average grant date fair values:

 

Expected volatility

      67%   

Expected life (years)

      5.0   

Interest rate

      0.6-1.0%   

Weighted-average fair values

    $ 4.20   
Schedule of Share-Based Compensation, Restricted Stock Award Activity
The following table summarizes the restricted stock award activity for the three months ended November 30, 2012 as follows:

 

     Number of
Shares		     Weighted
Average
Grant Date
Fair Value		  

Nonvested at August 31, 2012

      61,716      $ 5.94   

Granted

      —          —     

Vested

      (29,865 )      6.25   

Cancelled

      —          —     
  

 

 

    

 

 

  

Nonvested at November 30, 2012

      31,851      $ 5.65   
  

 

 

    

 

 

  
Schedule of Employee Service Share-Based Compensation, Allocation of Recognized Period Costs
The following table summarizes the total stock-based compensation cost and the effect on the Company’s Condensed Consolidated Statements of Operations (in thousands):

 

     Three months ended
November 30,		  
     2012      2011  

Cost of sales

    $ —         $ 25   

Operating expenses

      417         203   

Research and development expenses

      —           10   
  

 

 

     

 

 

  

Total stock-based compensation expense

    $ 417       $ 238   

Income tax benefit

      158         90   
  

 

 

     

 

 

  

Total stock-based compensation expense, net of tax

    $ 259       $ 148