ACCOUNTS RECEIVABLE ARRANGEMENTS: (Tables)
 6 Months Ended
May 31, 2013
Transfers and Servicing of Financial Assets [Abstract]  
Schedule of net sales financed through the flooring agreements and flooring fees incurred
The following table summarizes the net sales financed through the flooring agreements and the flooring fees incurred: 
 
Three Months Ended
 
Six Months Ended
 
May 31, 2013
 
May 31, 2012
 
May 31, 2013
 
May 31, 2012
Net sales financed
$
219,602

 
$
202,933

 
$
405,937

 
$
373,825

Flooring fees(1)
1,217

 
1,173

 
2,444

 
2,195

____________________________________
(1)
Flooring fees are included within “Interest expense and finance charges, net.”