Retirement Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Income)

Information with respect to the Retirement Plans and Other Postretirement Benefits follows: 

	Three Months Ended March 31,
	2022		2021		2022		2021
(Dollars in thousands)	Retirement Plans				Other Post Retirement Benefits
Service cost	$	137	$	130	$	30	$	36
Interest cost	390		354		24		21
Expected loss on plan assets	(933)		(892)		—		—
Amortization of net actuarial loss	204		317		14		12
Net periodic benefit (income) cost	$	(202)	$	(91)	$	68	$	69