SHARE-BASED COMPENSATION:
6 Months Ended
May 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based compensation
SHARE-BASED COMPENSATION: 
The Company recognizes share-based compensation expense for all share-based awards made to employees and directors, including employee stock options, restricted stock awards, restricted stock units and employee stock purchases, based on estimated fair values.
The Company uses the Black-Scholes valuation model to estimate fair value of stock options. The Black-Scholes option-pricing model was developed for use in estimating the fair value of short-lived exchange traded options that have no vesting restrictions and are fully transferable. In addition, option-pricing models require the input of highly subjective assumptions, including the option’s expected life and the price volatility of the underlying stock. The expected stock price volatility assumption was determined using historical volatility of the Company’s common stock.
The following table summarizes the number of share-based awards granted under the Company’s 2013 Stock Incentive Plan, as amended, during the three and six months ended May 31, 2014 and the Company's Amended and Restated 2003 Stock Incentive Plan, as amended, during the three and six months ended May 31, 2013 and the grant-date fair value of the awards:
 
Three Months Ended
 
Six Months Ended
 
May 31, 2014
 
May 31, 2013
 
May 31, 2014
 
May 31, 2013
 
Shares awarded
 
Fair value of grants
 
Shares awarded
 
Fair value of grants
 
Units awarded
 
Fair value of grants
 
Units awarded
 
Fair value of grants
Restricted stock awards
18

 
$
1,158

 
36

 
$
1,275

 
98


$
5,702


38
 
$
1,329

Restricted stock units
7

 
500

 
8

 
268

 
53

 
3,204

 
106
 
3,736

 
25

 
$
1,658

 
44

 
$
1,543

 
151

 
$
8,906

 
144
 
$
5,065


The Company recorded share-based compensation expenses of $3,048 and $5,632 in "Selling, general and administrative expenses" for the three and six months ended May 31, 2014, respectively, and $2,215 and $4,698 for the three and six months ended May 31, 2013, respectively.