CONTINGENT LIABILITIES (Narrative) (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 26, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Loss Contingencies [Line Items]
Number of lawsuits against the company	2
Minimum limit of per claim for providing insurance coverage on annual basis	$ 5
Maximum limit of aggregate loss incurred annually for providing insurance coverage on annual basis	$ 10
Total amount of damages claimed