EMPLOYEE BENEFITS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014 item	Sep. 29, 2013
Retirement expense for continuing operations
Total retirement expense-net	$ 1,159	$ 3,041	$ 3,474	$ 9,122
Number of new participants			0
Pension plan
Retirement expense for continuing operations
Service cost	2,008	1,386	6,023	4,159
Interest cost	22,751	21,149	68,253	63,447
Expected return on plan assets	(26,865)	(25,263)	(80,595)	(75,790)
Prior service cost amortization	3	4	9	11
Actuarial loss	4,003	6,389	12,007	19,168
Total retirement expense-net	1,900	3,665	5,697	10,995
Post-retirement plans
Retirement expense for continuing operations
Total retirement expense-net	$ (741)	$ (624)	$ (2,223)	$ (1,873)