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OTHER NON-CURRENT ASSETS (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Prepaid Expense and Other Assets, Noncurrent [Abstract]    
Deferred installation expenses [1] $ 3,049 $ 2,904
Deposits 316 318
Other non-current assets $ 3,365 $ 3,222
[1] See Note 1W.