BASIS OF PRESENTATION AND OPINION OF MANAGEMENT (Details)	3 Months Ended		9 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 24, 2016	Sep. 26, 2015
Basis of presentation and opinion of management
Length of fiscal quarters	91 days	91 days	273 days	273 days
Minimum
Basis of presentation and opinion of management
Length of fiscal years			364 days
Maximum
Basis of presentation and opinion of management
Length of fiscal years			371 days