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REVENUES (Schedule of Significant Changes in Deferred Revenues) (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2021
USD ($)
Revenues [Abstract]  
Balance, beginning of the period $ 10,987
New performance obligations 4,113
Reclassification to revenue as a result of satisfying performance obligations (2,806)
Balance, end of the period 12,294
Less: long-term portion of deferred revenue 9,155
Current portion, end of period $ 3,139