Retirement Plans (Tables)

6 Months Ended

Jul. 03, 2011

Net Periodic Pension Cost [Member]

Components Of Net Periodic Pension Cost

	For the Three Months Ended						For the Six Months Ended
	July 3,  2011			July 4,  2010			July 3,  2011			July 4,  2010
	(in thousands)
Service cost	$	668		$	921		$	1,493		$	1,952
Interest cost		4,459			4,268			8,849			8,816
Expected return on plan assets		(4,187	)		(5,273	)		(8,375	)		(10,140	)
Amortization of unrecognized:
Prior service cost		155			181			310			363
Net loss		2,341			1,022			4,386			2,768
Settlement		935			—			935			—
Total net periodic pension cost	$	4,371		$	1,119		$	7,598		$	3,759

Other Postretirement Benefit Plans, Defined Benefit [Member]

Components Of Net Periodic Pension Cost

	For the Three Months Ended						For the Six Months Ended
	July 3, 2011			July 4, 2010			July 3, 2011			July 4, 2010
	(in thousands)
Service cost	$	14		$	7		$	30		$	27
Interest cost		134			174			269			392
Amortization of unrecognized:
Prior service benefit		(150	)		(59	)		(299	)		(117	)
Net loss		45			(25	)		90			29
Total net periodic post-retirement cost	$	43		$	97		$	90		$	331