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COMMITMENTS AND CONTINGENT LIABILITIES (Tables)
12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Aggregate Minimum Lease Commitments
Aggregate minimum rental payments under non-cancelable operating leases as of December 31, 2017 and for each succeeding fiscal year indicated below are (in the aggregate) as follows:

2018
 
$
5,711
 
2019
   
4,190
 
2020
   
2,412
 
2021
   
675
 
2022
   
39
 
         
   
$
13,027