PENSION AND OTHER POSTRETIREMENT BENEFITS (Schedule of Net Periodic Benefit Cost (Income)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Pension Plans, Defined Benefit [Member]
Service cost		$ 51	$ 173
Interest cost	7,954	8,272	8,213
Estimated return on plan assets	(5,393)	(5,867)	(6,177)
Curtailment loss			16
Settlement loss (gain)
Amortization of prior service cost			3
Amortization of net loss (gain)	1,001	465	96
Net costs	3,562	2,921	2,324
Other Pension Plans, Defined Benefit [Member]
Service cost
Interest cost	78	96	112
Estimated return on plan assets
Curtailment loss
Settlement loss (gain)	(15)	(7)
Amortization of prior service cost
Amortization of net loss (gain)		(2)
Net costs	$ 63	$ 87	$ 112