PROPERTY, PLANT AND EQUIPMENT (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 25, 2012	Dec. 30, 2012
Depreciation	$ 33,800,000	$ 31,900,000
Proceeds from Sale of Property, Plant, and Equipment	1,660,000	3,066,000
Loss (gain) on property disposals	1,139,000	(859,000)
Assets held for sale	26,832,000		27,042,000
Idled Asset Accumulated Depreciation	95,400,000
Idled Asset Property Plant and Equipment Gross	155,100,000
Idled Assets Property Plant and Equipment Net	59,700,000
Gain (Loss) on Sale of Other Assets	18,000	800,000
Asset Impairment Charges	$ 0	$ 1,342,000