SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Cash flow hedges, liabilities		$ 206		$ 294
Cash flow hedges, assets	[1]	313		$ 986
Earnings (loss) per share
Option and restricted shares that have been excluded from the calculations of diluted net income per share			10,035
Minimum [Member]
Earnings (loss) per share
ROU assets and lease liabilities		436
Maximum [Member]
Earnings (loss) per share
ROU assets and lease liabilities		$ 528
Building [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		25 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		63 years
Buildings' Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		5 years
Buildings' Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		20 years
Condominium Units [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		30 years

[1] Hedging of cross currency interest rate swap transaction for the total amount of approximately NIS 34,200 at fixed interest rate of 6.7% in exchange for approximately $ 8,700 at fixed interest rate of 7.95% with semi-annually payments commencing on June 2016 through December 2021, the termination date. As of December 31, 2018 the hedging amount is $ 4,357.