SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended			1 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012	Nov. 30, 2013
Long-lived assets
Depreciation expense	$ 73,395	$ 62,291	$ 55,559
Impairment loss	0	12,161
Delta EMD, Ltd.
Long-lived assets
Impairment loss				$ 12,161
Buildings and improvements | Minimum
Long-lived assets
Estimated useful lives	15 years
Buildings and improvements | Maximum
Long-lived assets
Estimated useful lives	40 years
Machinery and equipment | Minimum
Long-lived assets
Estimated useful lives	3 years
Machinery and equipment | Maximum
Long-lived assets
Estimated useful lives	12 years
Transportation equipment | Minimum
Long-lived assets
Estimated useful lives	3 years
Transportation equipment | Maximum
Long-lived assets
Estimated useful lives	24 years
Office furniture and equipment | Minimum
Long-lived assets
Estimated useful lives	3 years
Office furniture and equipment | Maximum
Long-lived assets
Estimated useful lives	7 years