SEGMENT INFORMATION - Reconciliation of Segment Operating Income to Consolidated Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2016	Sep. 27, 2015	Sep. 25, 2016	Sep. 27, 2015
Segment Reporting Information [Line Items]
OPERATING INCOME	$ 20,117	$ 15,202	$ 68,738	$ 51,136
Unallocated corporate expenses	(28,735)	(19,839)	(80,750)	(59,692)
Amortization	(3,687)	(2,354)	(9,680)	(5,995)
Operating Segments [Member]
Segment Reporting Information [Line Items]
OPERATING INCOME	27,359	19,765	92,285	66,152
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Unallocated corporate expenses	(3,555)	(2,209)	(13,867)	(9,021)
Amortization	$ (3,687)	$ (2,354)	$ (9,680)	$ (5,995)