ACCOUNTS RECEIVABLE ARRANGEMENTS: (Tables)
 6 Months Ended
May. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]  
Schedule of Net Sales Financed through Financing Agreement
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, 2015
 
May 31, 2014
 
May 31, 2015
 
May 31, 2014
Net sales financed
$
299,473

 
$
351,439

 
$
615,258

 
$
633,429

Flooring fees(1)
2,081

 
1,922

 
4,157

 
3,492

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