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TAXES ON INCOME (Schedule of Income before Income Tax, Domestic And Foreign) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Taxes on Income [Line Items]
Income before taxes on income	$ 129,660	$ 144,481	$ 171,410
Domestic Country [Member]
Taxes on Income [Line Items]
Income before taxes on income	188,070	131,111	122,952
Foreign Country [Member]
Taxes on Income [Line Items]
Income before taxes on income	$ (58,410)	$ 13,370	$ 48,458

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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