Defined Benefit Plans (Tables)

6 Months Ended

Jun. 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 June 30,						Six months ended June 30,
	2020			2019			2020			2019
Service costs	$	310		$	260		$	630		$	520
Interest costs	230			270			470			540
Expected return on plan assets	(360		)	(350		)	(730		)	(700		)
Amortization of net loss	230			150			450			290
Net periodic benefit cost	$	410		$	330		$	820		$	650