Pension Benefits and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Cost

The components of net periodic benefit (credit) cost were as follows:

	Pension Benefits				Other Postretirement Benefits
	Three Months Ended				Three Months Ended
	March 31,				March 31,
(Dollars in thousands)	2023		2022		2023		2022
Service cost	$	—	$	—	$	19	$	10
Interest cost	268		191		17		8
Expected return of plan assets	(356)		(340)		—		—
Amortization of prior service credit	—		—		—		—
Amortization of net loss (gain)	122		111		(2)		—
Net periodic benefit (credit) cost	$	34	$	(38)	$	34	$	18