Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Components Of Net Periodic Benefit Costs

Components of net periodic benefit costs were as follows (in thousands):

	Three months ended						Six months ended
	June 30, 2013			July 1, 2012			June 30, 2013			July 1, 2012
Pension and SERPA Benefits
Service cost	$	8,997		$	8,420		$	17,994		$	16,840
Interest cost	19,752			20,816			39,564			41,632
Expected return on plan assets	(31,832		)	(29,277		)	(63,664		)	(58,555		)
Amortization of unrecognized:
Prior service cost	437			740			874			1,479
Net loss	14,652			10,969			29,304			21,937
Net periodic benefit cost	$	12,006		$	11,668		$	24,072		$	23,333
Postretirement Healthcare Benefits
Service cost	$	1,965		$	1,853		$	3,930		$	3,706
Interest cost	3,900			4,578			7,800			9,155
Expected return on plan assets	(2,384		)	(2,356		)	(4,768		)	(4,712		)
Amortization of unrecognized:
Prior service credit	(963		)	(963		)	(1,926		)	(1,927		)
Net loss	2,137			1,855			4,274			3,711
Net periodic benefit cost	$	4,655		$	4,967		$	9,310		$	9,933