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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(a)(4))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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