Defined Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2020

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,
	2020		2019		2020		2019
Service costs	$	320	$	270	$	950	$	790
Interest costs	240		260		710		800
Expected return on plan assets	(380)		(350)		(1,110)		(1,050)
Amortization of net loss	220		140		670		430
Net periodic benefit cost	$	400	$	320	$	1,220	$	970