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REVENUES (Schedule of Revenues) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Trade receivables |  | $ 113,719
Trade payables |  | 75,476
Accumulated deficits | $ (226,755) | (249,871)
Adjustments [Member] |  |
Trade receivables |  | 117
Trade payables |  | 47
Accumulated deficits |  | 70
Amount after Adjustments [Member] |  |
Trade receivables |  | 113,836
Trade payables |  | 75,523
Accumulated deficits |  | $ (249,801)
As Reported [Member] |  |
Trade receivables | 123,451 |
Trade payables | 78,892 |
Accumulated deficits | (233,955) |
Impact of Adoption [Member] |  |
Trade receivables | (741) |
Trade payables | (84) |
Accumulated deficits | (657) |
Amounts under Topic 605 [Member] |  |
Trade receivables | 122,710 |
Trade payables | 78,808 |
Accumulated deficits | $ (234,612) |

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