Pension Plans and Other Postretirement Employee Benefits

9 Months Ended

Sep. 30, 2011

General Discussion of Pension and Other Postretirement Benefits [Abstract]

Pension Plans and Other Postretirement Employee Benefits

Pension Plans and Other Postretirement Employee Benefits

The following table details the components of net periodic cost (benefit) of our pension plans and other postretirement employee benefits, or OPEB, for the quarters and nine months ended September 30:

Quarters ended September 30:

	Pension Plans						Other Postretirement Employee Benefits
(Dollars in thousands)	2011			2010			2011			2010
Service cost	$	1,114		$	1,158		$	112		$	104
Interest cost	5,331			5,412			871			993
Expected return on plan assets	(7,951		)	(8,283		)	—			—
Amortization of prior service cost (credit)	171			203			(2,134		)	(2,143		)
Amortization of actuarial loss	2,479			2,043			992			1,158
Net periodic cost (benefit)	$	1,144		$	533		$	(159	)	$	112

Nine months ended September 30:

	Pension Plans						Other Postretirement Employee Benefits
(Dollars in thousands)	2011			2010			2011			2010
Service cost	$	3,342		$	3,474		$	335		$	312
Interest cost	15,994			16,237			2,614			2,979
Expected return on plan assets	(23,853		)	(24,850		)	—			—
Amortization of prior service cost (credit)	513			609			(6,402		)	(6,429		)
Amortization of actuarial loss	7,437			6,130			2,975			3,474
Curtailment loss (gain)	—			64			—			(320		)
Net periodic cost (benefit)	$	3,433		$	1,664		$	(478	)	$	16

During the first quarter of 2011, we made contributions of $5.0 million to our qualified salaried pension plan and $4.4 million to our qualified non-represented pension plan, with $5.8 million being discretionary funding. We do not anticipate additional contributions to any of our qualified pension plans in 2011. During the nine months ended September 30, 2011, we made contributions of $1.3 million to our non-qualified supplemental pension plan.