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OPERATING LEASES (Tables)
12 Months Ended
Dec. 31, 2017
OPERATING LEASES [Abstract]  
Future minimum rental payments under operating leases
The following schedule shows future minimum rental payments under operating leases with noncancellable terms in excess of one year as of December 31, 2017 (in thousands):
 
2018
 
$
324
 
2019
  
327
 
2020
  
219
 
2021
  
171
 
2022
  
158
 
Thereafter
  
141
 
Total
 
$
1,340