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INVESTMENTS: (Tables)
12 Months Ended
Nov. 30, 2017
Investments [Abstract]  
Schedule of carrying amount of investments
The carrying amount of the Company’s investments is shown in the table below: 
 
As of November 30, 2017
 
As of November 30, 2016
 
Adjusted Cost Basis
 
Unrealized
Gains/(Losses)
 
Carrying
Value
 
Adjusted Cost Basis
 
Unrealized
Gains/(Losses)
 
Carrying
Value
Short-term investments:
 
 
 
 
 
 
 
 
 
 
 
Held-to-maturity investments
$
5,475

 
$

 
$
5,475

 
$
5,109

 
$

 
$
5,109

 


 


 


 


 


 


Long-term investments in “Other assets:”
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale securities
$
972

 
$
2,404

 
$
3,376

 
$
928

 
$
955

 
$
1,883

Held-to-maturity investments
5,189

 
(225
)
 
5,189

 
2,102

 

 
2,102

Cost-method investments
33,817

 

 
33,817

 
3,884

 

 
3,884