Components of Net Periodic Benefit Cost (Tables)

6 Months Ended

Jun. 30, 2011

Components of Net Periodic Benefit Cost

Components of Net Periodic Benefit Cost

	Three Months Ended June 30,												Six Months Ended June 30,
	Pension Benefits						Other Benefits						Pension Benefits						Other Benefits
(in thousands)	2011			2010			2011			2010			2011			2010			2011			2010
Service cost — benefits earned during the period	$	3,395		$	3,348		$	81		$	71		$	6,782		$	6,596		$	163		$	132
Interest cost on projected benefit obligation	8,836			8,651			122			137			17,701			17,476			220			275
Expected return on plan assets	(10,117		)	(9,986		)							(20,189		)	(20,108		)
Amortization of unrecognized transition obligation	67			56									128			118
Amortization of prior service cost	521			658			(134		)	(138		)	1,040			1,306			(321		)	(276		)
Recognized actuarial net (gain) or loss	5,856			4,055			(107		)	(113		)	11,712			8,110			(218		)	(225		)
Settlement loss (gain)	(2,491		)	31									(2,491		)	31
Net periodic benefit (income) cost	$	6,067		$	6,813		$	(38	)	$	(43	)	$	14,683		$	13,529		$	(156	)	$	(94	)