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RELATED PARTY BALANCES AND TRANSACTIONS (Narrative) (Details) - Orbit [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Jun. 30, 2021
Related Party Transaction [Line Items]    
Ownership interest held by Company's controlling shareholder   41.60%
Aggregate amount of purchase of infrastructure, construction and services $ 1,750