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OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
OTHER CURRENT LIABILITIES [Abstract]    
Accrued Expenses $ 4,648 $ 5,689
Other Liabilities 1,056 2,403
Deferred Revenues 1,052 140
Total as of December 31, $ 6,756 $ 8,232