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COMMITMENTS AND CONTINGENCIES (Tables)
 12 Months Ended
Dec. 31, 2016
COMMITMENTS AND CONTINGENCIES [Abstract]  
Lease commitments
The Company leases office premises, educational facilities and various equipment for varying periods through the year 2030 at basic annual rentals (excluding taxes, insurance, and other expenses under certain leases) as follows:

Year Ending December 31,
 
Credit
Agreement
  
Operating
Leases
 
2017
 
$
16,048
  
$
21,428
 
2018
  
6,881
   
19,132
 
2019
  
30,958
   
16,521
 
2020
  
-
   
12,439
 
2021
  
-
   
7,202
 
Thereafter
  
-
   
20,484
 
   
53,887
   
97,206
 
Less amount representing interest
  
(9,620
)
  
-
 
  
$
44,267
  
$
97,206