Pension Plans and Postretirement Benefit Plan (Tables)

3 Months Ended

Mar. 31, 2021

Compensation And Retirement Disclosure [Abstract]

Schedule of Components of Net Periodic Benefit Cost

Components of net periodic benefit cost for the Company’s pension plans and the postretirement benefit plan are presented in the following table for the three months ended March 31, 2021, and March 31, 2020.

	Pension Benefits						Postretirement Benefits
(dollars in thousands)	2021			2020			2021			2020
Three Months Ended March 31,
Service Cost	$	—		$	—		$	176		$	151
Interest Cost		727			900			206			231
Expected Return on Plan Assets		(1,148	)		(1,258	)		—			—
Amortization of:
Prior Service Credit		—			—			(61	)		(61	)
Net Actuarial Losses		662			570			—			—
Net Periodic Benefit Cost	$	241		$	212		$	321		$	321