TAXES ON INCOME (Open Tax Years) (Details)	12 Months Ended
	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.