Retirement Plans and Other Post-Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2013

Compensation And Retirement Disclosure [Abstract]

Schedule of Pension and Post Retirement Medical Benefit Plans

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


	Three months ended
	September 30
In thousands	2013			2012
Pension Benefits
Service cost	$	2,897		$	2,778
Interest cost		5,504			5,770
Expected return on plan assets		(10,857	)		(10,541	)
Amortization of prior service cost		773			614
Amortization of unrecognized loss		5,237			4,255

Subtotal	$	3,554		$	2,876


Other Benefits
Service cost	$	789		$	709
Interest cost		545			608
Expected return on plan assets		—			(113	)
Amortization of prior service cost		(125	)		(234	)
Amortization of unrecognized loss		202			165

Net periodic benefit cost	$	1,411		$	1,135


	Nine months ended
	September 30
In thousands	2013			2012
Pension Benefits
Service cost	$	8,693		$	8,334
Interest cost		16,504			17,304
Expected return on plan assets		(32,570	)		(31,651	)
Amortization of prior service cost		2,321			1,841
Amortization of unrecognized loss		15,711			12,765

Subtotal	$	10,659		$	8,593


Other Benefits
Service cost	$	2,367		$	2,127
Interest cost		1,635			1,824
Expected return on plan assets		—			(339	)
Amortization of prior service cost		(375	)		(703	)
Amortization of unrecognized loss		606			496

Net periodic benefit cost	$	4,233		$	3,405

- Definition

Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.

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