Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Summary of Changes in Plan Assets and Plan Benefit Obligations

The following table summarizes the changes in plan assets and plan benefit obligations.

Year Ended December 31,	2023			2022
(Dollars in thousands)
Change in benefit obligation
Beginning benefit obligation	$	23,155		$	31,120
Interest cost		1,217			872
Actuarial loss (gain)		739			(7,392	)
Benefit payments		(1,450	)		(1,445	)
Ending benefit obligation	$	23,661		$	23,155

Summary of Defined Benefit Plans

Year Ended December 31,	2023			2022
(Dollars in thousands)
Change in plan assets
Fair value of plan assets at beginning of year	$	—		$	—
Employer contribution		1,450			1,445
Benefit payments		(1,450	)		(1,445	)
Fair value of plan assets at end of year	$	—		$	—
Funded status	$	(23,661	)	$	(23,155	)
Amounts recognized in the consolidated    balance sheets consist of:
Accrued expenses	$	(1,431	)	$	(1,393	)
Other non-current liabilities		(22,230	)		(21,762	)
Net amount recognized	$	(23,661	)	$	(23,155	)
Amounts recognized in accumulated other    comprehensive loss consist of:
Net actuarial loss	$	2,460		$	1,721
Prior service cost					-
Net amount recognized, before tax effect	$	2,460		$	1,721
Weighted average assumptions used to    determine benefit obligations:
Discount rate		5.1	%		5.4	%
Rate of compensation increase		3.0	%		3.0	%

Summary of Components of Net Periodic Pension Cost

Components of net periodic pension cost are described in the following table:

Year Ended December 31,	2023			2022
(Dollars in thousands)
Components of net periodic pension cost:
Interest cost	$	1,217		$	872
Amortization of actuarial loss		—			332
Net periodic pension cost	$	1,217		$	1,204
Weighted average assumptions used to determine net    periodic pension cost:
Discount rate		5.4	%		2.9	%
Rate of compensation increase		3.0	%		3.0	%

Summary of Expected Benefit Payments

Benefit payments during the next ten years, which reflect applicable future service, are as follows:

Year Ended December 31,	Amount
(Dollars in thousands)
2024	$	1,467
2025		1,683
2026		1,749
2027		1,706
2028		1,748
Years 2029 to 2033		8,994

Periodic Pension Cost, Next Fiscal Year

The following is an estimate of the components of net periodic pension cost in 2024:

Estimated Year Ended December 31,	2024
(Dollars in thousands)
Interest cost	$	1,158
Amortization of actuarial loss		5
Estimated 2024 net periodic pension cost	$	1,163