Pension and Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Credit)

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

	Three Months Ended March 31,
	Pension Plan						Supplemental Retirement Plan				Retirement Healthcare Plan
	2023			2022			2023		2022		2023			2022
	(dollars in thousands)
Net periodic benefit cost (credit)
Service cost	$	—		$	—		$	68	$	101	$	4		$	8
Interest cost		452			310			100		59		5			5
Expected return on assets		(801	)		(936	)		—		—		—			—
Amortization of net actuarial (gain) loss		—			—			—		—		(6	)		—
Net periodic benefit cost (credit)	$	(349	)	$	(626	)	$	168	$	160	$	3		$	13