SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)
Accounting Policies [Abstract]
Number of operating segments | segment	6
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change in accounting for stock based compensation	$ 231
Accumulated Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change in accounting for stock based compensation	$ (450)
Accumulated Earnings | Accounting Standards Updated 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change in accounting for stock based compensation		$ (500)