Retirement Plans and Other Post-Retirement Benefits

9 Months Ended

Sep. 30, 2011

Retirement Plans and Other Post-Retirement Benefits [Abstract]

RETIREMENT PLANS AND OTHER POST-RETIREMENT BENEFITS

8. RETIREMENT PLANS AND OTHER POST-RETIREMENT BENEFITS

The following table provides information with respect to the net periodic costs of our pension and post retirement medical benefit plans.

	Three months ended September 30
In thousands	2011			2010
Pension Benefits
Service cost	$	2,492		$	2,415
Interest cost		6,109			5,897
Expected return on plan assets		(10,454	)		(10,046	)
Amortization of prior service cost		642			614
Amortization of unrecognized loss		3,313			3,314
Subtotal		2,102			2,194
One-time settlement charge		1,987			—
Net periodic benefit cost	$	4,089		$	2,194
Other Benefits
Service cost	$	726		$	730
Interest cost		704			843
Expected return on plan assets		(130	)		(134	)
Amortization of prior service cost		(305	)		(305	)
Amortization of unrecognized loss		220			385
Net periodic benefit cost	$	1,215		$	1,519

	Nine months ended September 30
In thousands	2011			2010
Pension Benefits
Service cost	$	7,435		$	7,108
Interest cost		18,206			17,950
Expected return on plan assets		(31,368	)		(30,190	)
Amortization of prior service cost		1,925			1,845
Amortization of unrecognized loss		9,939			10,218
Subtotal		6,137			6,931
One-time settlement charge		1,987			—
Net periodic benefit cost	$	8,124		$	6,931
Other Benefits
Service cost	$	2,179		$	2,189
Interest cost		2,112			2,528
Expected return on plan assets		(390	)		(403	)
Amortization of prior service cost		(916	)		(917	)
Amortization of unrecognized loss		661			1,154
Net periodic benefit cost	$	3,646		$	4,551

In the third quarter of 2011 we recognized a $2.0 million, one-time pension settlement charge in connection with the retirement of our former chief executive officer at the end of 2010 and the lump-sum distribution of accrued pension benefits due to him in July 2011.

In millions	Sept. 30, 2011		Dec. 31, 2010
Pension Plan Assets
Fair value of plan assets at end of period	$	471.1	$	526.4