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SIGNIFICANT ACCOUNTING POLICIES (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Total Revenues $ 4,393 $ 4,873 $ 6,545
Units Placed [Member]      
Total Revenues 3,620 4,385 6,237
Spare parts and warranties [Member]      
Total Revenues $ 773 $ 488 $ 308