Defined Benefit Plans (Tables)

9 Months Ended

Sep. 30, 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 September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Service costs	$	330	$	320	$	980	$	950
Interest costs	200		240		600		710
Expected return on plan assets	(380)		(380)		(1,160)		(1,110)
Amortization of net loss	220		220		680		670
Net periodic benefit cost	$	370	$	400	$	1,100	$	1,220