Retirement Plans and Other Post-Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2021

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 March 31
In thousands	2021			2020
Pension Benefits
Service cost	$	—		$	44
Interest cost		250			301
Amortization of prior service cost		12			12
Amortization of actuarial loss		199			160
Total net periodic benefit expense	$	461		$	517
Other Benefits
Service cost	$	7		$	7
Interest cost		32			46
Amortization of prior service credit		(58	)		(116	)
Amortization of actuarial loss (gain)		12			(209	)
Total net periodic benefit income	$	(7	)	$	(272	)