Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The following tables detail the components of the net periodic cost for the plans described above:

	Pension Benefits
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(Dollars in thousands)	2020		2019		2020		2019
Interest cost	$	80	$	109	$	256	$	328
Expected return on plan assets	(187)		(195)		(577)		(586)
Amortization of net loss	35		19		101		58
Settlement of benefit obligation	531		—		1,050		—
Net periodic loss (income)	$	459	$	(67)	$	830	$	(200)

	Postretirement Benefits
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(Dollars in thousands)	2020		2019		2020		2019
Interest cost	$	1	$	1	$	2	$	3
Amortization of prior service cost	—		—		—		(1)
Amortization of net gain	(2)		(2)		(4)		(4)
Net periodic income	$	(1)	$	(1)	$	(2)	$	(2)

Schedule of Changes in Projected Benefit Obligations

The following table summarizes the change in the projected benefit obligation and funded status as a result of the remeasurement and the aggregate settlements for the nine months ended September 30, 2020:

	As of			September 30, 2020
(Dollars in thousands)	December 31,			Before			Impact of		After
Funded status:	2019			Settlements			Settlements		Settlements
Projected benefit obligation	$	12,668		$	12,854		$	(1,172)	$	11,682
Fair value of plan assets	11,865			10,989			(1,172)		9,817
Funded status	$	(803)		$	(1,865)		$	—	$	(1,865)
Gross unrealized loss	$	5,068		$	5,834		$	(531)	$	5,303
Assumptions:
Discount rate	3.12		%	2.51		%			2.51		%
Expected return on plan assets	7.50		%	7.50		%			7.50		%