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DERIVATIVE INSTRUMENTS (Schedule Of Derivative Instruments) (Statement of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in Statements of comprehensive Income	$ (584)
Gain (loss) recognized in consolidated statements of operations	(201)	$ (766)	$ (191)
Foreign Exchange Option And Forward Contract [Member] | Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in Statements of comprehensive Income	(584)
Foreign Exchange Option And Forward Contract [Member] | Derivatives designated as hedging instruments [Member] | Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in consolidated statements of operations	(1,373)	1,772	261
Foreign exchange forward contracts [Member] | Derivatives not designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in Statements of comprehensive Income
Foreign exchange forward contracts [Member] | Derivatives not designated as hedging instruments [Member] | Financial Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in consolidated statements of operations	$ 1,172	$ (2,538)	$ (452)

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580

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-Publisher FASB
-Name Accounting Standards Codification
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