XML 60 R36.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock Option Plans (Tables)
 12 Months Ended
Jan. 31, 2013
Stock Option Plans [Abstract]  
Schedule of fair value option award

Weighted average Black-Scholes-Merton fair value assumptions

 

             
    Years Ended January 31,
    2013   2012   2011

Risk free interest rate

   0.58 - 0.78%   1.52 -2.00%   1.82 - 1.97%

Expected life

   3.28 - 6.60 yrs   2.85 - 4.89 yrs   2.4 - 4.4 yrs

Expected volatility

   59 - 60%   54 - 55%   57 - 58%

Expected dividend yield

   0.0%   0.0%   0.0%
Company's stock option activity
                                 
    Number of
Shares (in
thousands)		     Weighted
Average
Exercise
Price		     Weighted
Average
Remaining
Contractual
Term
(in years)		     Aggregate
Intrinsic
Value
(in
thousands) 		 

Outstanding, January 31, 2012

     1,413     $ 9.60                  

Granted

     172       18.21                  

Exercised

     (158 )      2.10                  

Forfeited

     —         —                    

Expired

     —         —                    
   

 

 

                          

Outstanding, January 31, 2013

     1,427     $ 11.37       5.23     $ 6,192  
   

 

 

                          

Exercisable at January 31, 2013

     1,316     $ 10.94       4.88     $ 6,158  

Vested and expected to vest at January 31, 2013

     1,424     $ 11.44       5.20     $ 6,192  
Restricted stock and changes during period
                 
    Year Ended January 31, 2013  
    Number of
Shares (in
thousands)		     Weighted Average
Grant Date Fair
Value		  

Unvested, beginning of period

     36       10.47  

Granted

     49       18.73  

Vested

     (49 )      13.52  

Canceled

     —         —    
   

 

 

          

Unvested, end of period

     36       17.59