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COMMITMENTS AND CONTINGENT LIABILITIES (Tables)
12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Future Minimum Lease Commitments Under Non-Cancelable Operating Leases
Future minimum lease commitments under non-cancelable operating leases for the years ended December 31, were as follows:
 
2018
 
$
18,150
 
2019
   
17,060
 
2020
   
14,879
 
2021
   
13,207
 
2022
   
14,379
 
2023 and thereafter
   
19,392
 
         
   
$
97,067