SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Nov. 30, 2013 Delta EMD, Ltd.	Dec. 28, 2013 Buildings and improvements Minimum	Dec. 28, 2013 Buildings and improvements Maximum	Dec. 28, 2013 Machinery and equipment Minimum	Dec. 28, 2013 Machinery and equipment Maximum	Dec. 28, 2013 Transportation equipment Minimum	Dec. 28, 2013 Transportation equipment Maximum	Dec. 28, 2013 Office furniture and equipment Minimum	Dec. 28, 2013 Office furniture and equipment Maximum
Long-lived assets
Estimated useful lives					15 years	40 years	3 years	12 years	3 years	24 years	3 years	7 years
Depreciation expense	$ 62,291	$ 55,559	$ 54,352
Impairment loss	$ 12,161			$ 12,161