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GEOGRAPHIC INFORMATION (Schedule of Major Customers) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Network intelligence solutions [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk percentage | 83.00% | 76.00% | 74.00%
Security Solutions [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk percentage | 17.00% | 24.00% | 26.00%
Sales [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk percentage | 54.00% | 27.00% | 22.00%
Sales [Member] | Customer A [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk percentage | 43.00% | 16.00% | 22.00%
Sales [Member] | Customer B [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk percentage | 11.00% | 11.00% |

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