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TAXES ON INCOME (Open Tax Years) (Details) | 12 Months Ended
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Dec. 31, 2017
ISRAEL [Member] | Minimum [Member] |  |
Income Tax Contingency [Line Items] |  |
Open tax year | 2013 |
ISRAEL [Member] | Maximum [Member] |  |
Income Tax Contingency [Line Items] |  |
Open tax year | 2017 |
UNITED STATES [Member] | Minimum [Member] |  |
Income Tax Contingency [Line Items] |  |
Open tax year | 2013 | [1]
UNITED STATES [Member] | Maximum [Member] |  |
Income Tax Contingency [Line Items] |  |
Open tax year | 2017 | [1]
[1] | Includes federal, state and local (or similar provincial jurisdictions) tax positions.

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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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