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Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2022

Compensation And Retirement Disclosure [Abstract]

Schedule of Reconciliation of Changes in Benefit Obligation and Fair value of Plan Assets As Well As the Funded Status Recognized in the Consolidated Statements

The following table provides a reconciliation of changes in benefit obligation and fair value of plan assets, as well as the funded status recognized in the Company’s consolidated statements of condition for the Pension Plans and postretirement benefit plan for the years ended December 31, 2022, and December 31, 2021.

	Pension Benefits						Postretirement Benefits
(dollars in thousands)	2022			2021			2022			2021
Benefit Obligation at Beginning of Year	$	110,585		$	117,647		$	29,270		$	31,507
Service Cost		—			—			584			678
Interest Cost		3,097			2,924			861			816
Actuarial Losses (Gains)		(22,049	)		(2,817	)		(7,577	)		(2,514	)
Employer Benefits Paid ¹		(7,179	)		(7,169	)		(1,209	)		(1,217	)
Benefit Obligation at End of Year	$	84,454		$	110,585		$	21,929		$	29,270
Fair Value of Plan Assets at Beginning of Year	$	101,294		$	97,890		$	—		$	—
Actual Return on Plan Assets		(15,261	)		10,103			—			—
Employer Contributions		470			470			1,209			1,217
Employer Benefits Paid ¹		(7,179	)		(7,169	)		(1,209	)		(1,217	)
Fair Value of Plan Assets at End of Year	$	79,324		$	101,294		$	—		$	—
Funded Status at End of Year ²	$	(5,130	)	$	(9,291	)	$	(21,929	)	$	(29,270	)

¹	Participants' contributions relative to the postretirement benefit plan were offset against employer benefits paid in the table above. Participants' contributions for postretirement benefits were $0.8 million for the years ended December 31, 2022, and December 31, 2021.

²	^{Amounts are recognized in Retirement Benefits Payable in the consolidated statements of condition.}

Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Loss)

The following presents the amounts recognized in the Company’s accumulated other comprehensive income for the Pension Plans and postretirement benefit plan as of December 31, 2022, and December 31, 2021.

	Pension Benefits						Postretirement Benefits
(dollars in thousands)	2022			2021			2022		2021
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax
Net Actuarial Gains (Losses)	$	(31,984	)	$	(35,014	)	$	5,803	$	235
Net Prior Service Credit		—			—			1,103		1,283
Total Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax	$	(31,984	)	$	(35,014	)	$	6,906	$	1,518

Schedule of Components of Net Periodic Benefit Cost

Components of net periodic benefit cost for the Company’s Pension Plans and the postretirement benefit plan are presented in the following table for the years ended December 31, 2022, December 31, 2021, and December 31, 2020.

	Pension Benefits									Postretirement Benefits
(dollars in thousands)	2022			2021			2020			2022			2021			2020
Service Cost	$	—		$	—		$	—		$	584		$	678		$	578
Interest Cost		3,097			2,924			3,627			861			816			945
Expected Return on Plan Assets		(4,840	)		(4,592	)		(5,028	)		—			—			—
Amortization of:
Prior Service Credit ¹		—			—			—			(246	)		(246	)		(246	)
Net Actuarial Losses (Gains) ¹		2,175			2,676			2,318			—			—			—
Net Periodic Benefit Cost	$	432		$	1,008		$	917		$	1,199		$	1,248		$	1,277

¹	Represents reclassification adjustments from accumulated other comprehensive income during the period.

Schedule of Assumptions Used to Determine the Benefit Obligations/net Periodic Cost

Assumptions used to determine the benefit obligations as of December 31, 2022, and December 31, 2021, for the Company’s Pension Plans and postretirement benefit plan were as follows:

	Pension Benefits						Postretirement Benefits
	2022			2021			2022			2021
Weighted Average Assumptions as of December 31:
Discount Rate		5.51	%		2.89	%		5.58	%		3.00	%
Health Care Cost Trend Rate Assumed For Next Year		—			—			6.20	%		5.70	%

Schedule of Assumptions Used in Calculation Net Periodic Benefit Cost

Assumptions used to determine the net periodic benefit cost for the Company’s Pension Plans and postretirement benefit plan for the years ended December 31, 2022, December 31, 2021, and December 31, 2020, were as follows:

	Pension Benefits									Postretirement Benefits
	2022			2021			2020			2022			2021			2020
Weighted Average Assumptions as of December 31:
Discount Rate		2.89	%		2.55	%		3.36	%		3.00	%		2.66	%		3.42	%
Expected Long-Term Rate of Return on Plan Assets		5.25	%		5.25	%		5.75	%		—			—			—
Health Care Cost Trend Rate		—			—			—			5.70	%		5.50	%		5.70	%

Schedule of Expected Benefits to be Paid in Each of the Next Five Years and in the Aggregate for the Five Years Thereafter

As of December 31, 2022, expected benefits to be paid in each of the next five years and in the aggregate for the five years thereafter were as follows:

(dollars in thousands)	Pension Benefits		Postretirement Benefits
2023	$	7,471	$	1,377
2024		7,426		1,402
2025		7,393		1,467
2026		7,316		1,521
2027		7,201		1,585
Years 2028-2032		33,630		8,573

Schedule of the Fair Values of the Retirement Plan Assets by Asset Category

The fair values of the Retirement Plan assets as of December 31, 2022, and December 31, 2021, by asset category were as follows:

	Fair Value Measurements
Asset Category (dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Total as of Dec. 31, 2022		Total as of Dec. 31, 2021
Cash	$	589	$	—	$	—	$	589	$	618
Equity Securities – Mutual Funds:
Large-Cap		4,979		—		—		4,979		511
Mixed-Cap		23,632		—		—		23,632		33,108
International		18,283		—		—		18,283		29,022
Emerging Market		757		—		—		757		1,786
Fixed Income Securities – Mutual Funds		31,084		—		—		31,084		36,249
Total	$	79,324	$	—	$	—	$	79,324	$	101,294