Pension and Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Credit)

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

	Three Months Ended June 30,
	Pension Plan						Supplemental Retirement Plan				Retirement Healthcare Plan
	2022			2021			2022		2021		2022		2021
	(dollars in thousands)
Net periodic benefit cost (credit)
Service cost	$	—		$	—		$	98	$	106	$	6	$	8
Interest cost		345			303			71		56		5		5
Expected return on assets		(1,002	)		(891	)		—		—		—		—
Amortization of net actuarial loss		—			—			—		11		—		—
Net periodic benefit cost (credit)	$	(657	)	$	(588	)	$	169	$	173	$	11	$	13

	Six Months Ended June 30,
	Pension Plan						Supplemental Retirement Plan				Retirement Healthcare Plan
	2022			2021			2022		2021		2022		2021
	(dollars in thousands)
Net periodic benefit cost (credit)
Service cost	$	—		$	—		$	199	$	212	$	14	$	17
Interest cost		655			606			130		113		10		9
Expected return on assets		(1,938	)		(1,783	)		—		—		—		—
Amortization of prior service credit		—			(1	)		—		—		—		—
Amortization of net actuarial loss		—			—			—		22		—		—
Net periodic benefit cost (credit)	$	(1,283	)	$	(1,178	)	$	329	$	347	$	24	$	26