Retirement Plans and Other Post-Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2020

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Periodic Costs of Pension and Post Retirement Medical Benefit Plans Included in Continuing Operations

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

	Three months ended June 30
In thousands	2020			2019
Pension Benefits
Service cost	$	48		$	373
Interest cost		300			3,337
Expected return on plan assets		—			(3,699	)
Amortization of prior service cost		11			54
Amortization of unrecognized loss		161			789
Total net periodic benefit cost	$	520		$	854
Other Benefits
Service cost	$	7		$	9
Interest cost		46			84
Amortization of prior service credit		(116	)		(3	)
Amortization of actuarial gain		(208	)		(173	)
Total net periodic benefit credit	$	(271	)	$	(83	)

	Six months ended June 30
In thousands	2020			2019
Pension Benefits
Service cost	$	92		$	857
Interest cost		601			6,787
Expected return on plan assets		—			(7,395	)
Amortization of prior service cost		23			88
Amortization of unrecognized loss		321			1,564
Total net periodic benefit cost	$	1,037		$	1,901
Other Benefits
Service cost	$	14		$	18
Interest cost		92			168
Amortization of prior service credit		(232	)		(5	)
Amortization of actuarial gain		(417	)		(346	)
Total net periodic benefit credit	$	(543	)	$	(165	)