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Retirement Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Defined Benefit Plans Disclosures The following table sets forth the change in plan assets, change in projected benefit obligation, rate assumptions and components of net periodic benefit cost as of December 31 with respect to the plan. The measurement dates of the assets and liabilities of the plan were December 31 of the respective years presented. 
Reconciliation of Funded Status
 Year Ended December 31,
(in thousands)   20222021
Change in projected benefit obligation   
Benefit obligation at beginning of year$22,564 $24,100 
Service cost4 5 
Interest cost604 553 
Liability actuarial (gain) loss (4,761)(994)
Benefits paid(1,140)(1,100)
Benefit obligation at end of year$17,271 $22,564 
Change in fair value of plan assets    
Fair value of plan assets at beginning of year$23,671 $22,370 
Return on plan assets(4,262)2,401 
Employer contributions— — 
Benefits paid(1,140)(1,100)
Fair value of plan assets at end of year18,269 23,671 
Funded status $998 $1,107 
Schedule of Allocation of Plan Assets The pension plans' weighted-average asset allocation as a percentage of plan assets at December 31 is as follows: 
Asset Allocation as a Percentage of the Plan
 
Year Ended December 31,
 20222021
Equity securities36%36%
Debt securities62%62%
Short-term investments2%2%
Other—%—%
Total100%100%
Fair Value, Assets Measured on Recurring Basis
The following table presents the hierarchy levels for our postretirement benefit plan investments as of December 31 as described in Note 1 to the Consolidated Financial Statements:
 
 

 
 
(in thousands)		December 31, 2022
Quoted
Prices in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Mutual Funds:    
Mid Cap$512 $512 $— $— 
International743 743 — — 
Common/Collective Trusts:
Wells Fargo Liability Driven Solution CIT I7,815 — 7,815 — 
Wells Fargo Liability Driven Solution CIT II3,550 — 3,550 — 
Wells Fargo BlackRock International Equity488 — 488 — 
Wells Fargo/Causeway International Value464 — 464 — 
Wells Fargo BlackRock Large Cap Growth Index Fund724 — 724 — 
Wells Fargo BlackRock Large Cap Value Index Fund744 — 744 — 
Wells Fargo Multi-Manager Small Cap785 — 785 — 
Wells Fargo BlackRock Russell 2000 Index Fund261 — 261 — 
Wells Fargo BlackRock S&P Mid Cap Index Fund320 — 320 — 
Wells Fargo/MFS Value CIT F359 — 359 — 
Wells Fargo/T. Rowe Price Large-Cap Growth Managed CIT359 — 359 — 
Wells Fargo/T. Rowe Price Equity Income Managed CIT356 — 356 — 
Wells Fargo Voya Large Cap Growth CIT F357 — 357 — 
Cash & Short-term Investments432 432 — — 
Total$18,269 $1,687 $16,582 $— 
            
 
 
 
 
(in thousands)		December 31, 2021
Quoted
Prices in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
 
Significant
Unobservable
Inputs
(Level 3)
Mutual Funds:    
Mid Cap$637 $637 $— $— 
International940 940 — — 
Common/Collective Trusts:
Wells Fargo Liability Driven Solution CIT I7,782 — 7,782 — 
Wells Fargo Liability Driven Solution CIT II7,026 7,026 
Wells Fargo BlackRock International Equity616 — 616 — 
Wells Fargo/Causeway International Value586 — 586 — 
Wells Fargo BlackRock Large Cap Growth Index Fund950 — 950 — 
Wells Fargo BlackRock Large Cap Value Index Fund968 — 968 — 
Wells Fargo Multi-Manager Small Cap1,015 — 1,015 — 
Wells Fargo BlackRock Russell 2000 Index Fund332 — 332 — 
Wells Fargo BlackRock S&P Mid Cap Index Fund419 — 419 — 
Wells Fargo/MFS Value CIT F469 — 469 — 
Wells Fargo/T. Rowe Price Large-Cap Growth Managed CIT465 — 465 — 
Wells Fargo/T. Rowe Price Equity Income Managed CIT487 — 487 — 
Wells Fargo Voya Large Cap Growth CIT F482 — 482 — 
Cash & Short-term Investments497 497 — — 
Total$23,671 $2,074 $21,597 $— 
Schedule of Changes in Projected Benefit Obligations
The change in the Projected Benefit Obligation (PBO) as of December 31, 2022 and 2021, is shown below:
 
Reconciliation of Benefit Obligation
Year Ended December 31,
(in thousands)20222021
Benefit obligation at January 1,$11,326 $10,160 
Service cost284 369 
Interest cost278 205 
Liability actuarial loss (gain)(2,023)759 
Benefits paid(313)(167)
Benefit obligation at December 31,$9,552 $11,326 
Pension Plan  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Assumptions Used In determining the projected benefit obligation and the net pension cost, we used the following significant weighted-average assumptions:
 
Rates to Determine Benefit Obligation
 
Year Ended December 31,
 20222021
Discount rate5.10%2.75%
Composite rate of compensation increaseN/AN/A
 
Rates to Determine Net Periodic Benefit Cost
 Year Ended December 31,
 20222021
Discount rate2.75%2.35%
Long-term rate of return on plan assets6.00%7.25%
Composite rate of compensation increaseN/AN/A
Schedule of Net Periodic Benefit Cost The following table presents the components of net periodic benefit cost (gains are denoted with parentheses and losses are not):
Components of Net Periodic Benefit Cost
 Year Ended December 31,
 (in thousands)
20222021
Service cost$4 $5 
Interest cost604 553 
Expected return on plan assets(1,384)(1,581)
Amortization of net loss182 542 
Net periodic benefit cost$(594)$(481)
Schedule of Expected Benefit Payments The following table illustrates the estimated pension benefit payments that are projected to be paid: 
Projected Future Benefit Payments
 
(in thousands)
Employees’
Retirement Plan
2023$1,275 
20241,304 
20251,315 
20261,312 
20271,306 
Years 2028 through 20326,209 
Supplemental Employee Retirement Plan  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Assumptions Used
In determining the projected benefit obligation and the net pension cost, we used the following significant weighted-average assumptions:
 
Assumptions used to determine benefit obligations at December 31:
 
Rates to Determine Benefit Obligation
 20222021
Discount rate5.05%2.50%
Composite rate of compensation increase3.00%3.00%
 
Assumptions used to determine net periodic benefit cost for the years ended December 31:
 
Rates to Determine Net Periodic Benefit Cost
 20222021
Discount rate2.50%2.05%
Composite rate of compensation increase3.00%3.00%
Long-term rate of return on plan assetsN/AN/A
Schedule of Net Periodic Benefit Cost
The components of net periodic pension expense were as follows:
 
Components of Net Periodic Benefit Cost
Year Ended December 31,
(in thousands)20222021
Service cost$284 $369 
Interest cost278 205 
Amortization of prior service cost420 413 
Amortization of net (gain)/loss440 318 
Net periodic benefit cost$1,422 $1,305 
Schedule of Expected Benefit Payments
Future estimated benefits expected to be paid from the plan over the next ten years as follows:
Projected Future Benefit Payments
(in thousands)SERP
2023$490 
2024546 
2025639 
2026866 
2027868 
Years 2028 through 20324,321