Defined Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2021

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Costs of Retirement Plans

The components of net periodic pension cost are as follows (dollars in thousands):

	Pension Plans
	Three months ended March 31,
	2021		2020
Service costs	$	330	$	320
Interest costs	200		240
Expected return on plan assets	(390)		(370)
Amortization of net loss	230		220
Net periodic benefit cost	$	370	$	410