PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 23, 2012	Sep. 29, 2013	Sep. 23, 2012	Dec. 30, 2012
PROPERTY, PLANT AND EQUIPMENT [Abstract]
Depreciation	$ 34,300	$ 32,500	$ 102,300	$ 96,700
Proceeds from property disposals	400	16,200	3,330	28,687
Gain on property disposals	53	(1,900)	2,000	(1,400)
Assets held for sale	25,320		25,320		27,042
Idled asset accumulated depreciation	94,400		94,400
Idled asset property, plant and equipment gross	149,400		149,400
Idled assets property, plant and equipment, net	55,000		55,000
Gain (Loss) on Sale of Other Assets	(300)	(2,600)	(1,500)	(3,700)
Asset impairment	$ 400		$ 3,457	$ 1,342