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Note 13 - Employee Retirement Plans | 12 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Retirement Benefits [Text Block] | 13. Employee Retirement Plans Postretirement benefits The Company provides postretirement healthcare benefits for certain employee groups. The postretirement healthcare plans are contributory and contain certain other cost‑sharing features such as deductibles and coinsurance. The plans are unfunded. Employees do not vest until they retire from active employment with the Company and have at least twelve years of service. These benefits can be amended or terminated at any time and are subject to the same ongoing changes as the Company’s healthcare benefits for employees with respect to deductible, co‑insurance and participant contributions. Postretirement benefits of $5,230 and $6,031 as of December 31, 2022 and December 31, 2021, respectively, are included in Retiree benefits and deferred compensation in the Consolidated Balance Sheets. Postretirement benefits of $240 and $230 as of December 31, 2022 and December 31, 2021, respectively, are included in Accrued expenses and other current liabilities in the Consolidated Balance Sheets. Effective January 1, 2004, the postretirement healthcare benefits were extended to all active employees of the Company as of December 31, 2003. The period of coverage was reduced and the retiree contribution percentage was increased in order to keep the cost of the plan equivalent to the previous plan design. Maximum coverage under the plan is limited to ten years. All benefits terminate upon the death of the retiree. Employees who began working for the Company after December 31, 2003, are not eligible for postretirement healthcare benefits. The reconciliation of the beginning and ending balances of the projected benefit obligation for the Company consisted of the following:
|  | December 31, |
|  | 2022 |  |  | 2021 |
Change in projected benefit obligation: |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 6,261 |  |  | $ | 6,736 |
Service cost |  |  | 115 |  |  |  | 137 |
Interest cost |  |  | 153 |  |  |  | 137 |
Participant contributions |  |  | 59 |  |  |  | 52 |
Changes in actuarial assumptions |  |  | (972 | ) |  |  | (790 | )
Benefits paid |  |  | (146 | ) |  |  | (11 | )
Projected benefit obligation at end of year |  | $ | 5,470 |  |  | $ | 6,261 |
Amounts recognized in the consolidated balance sheets consisted of: |  |  |  |  |  |  |  |
Accrued expenses and other current liabilities |  | $ | 240 |  |  | $ | 230 |
Retiree health benefit obligation |  |  | 5,230 |  |  |  | 6,031 |
|  | $ | 5,470 |  |  | $ | 6,261 |
The components of postretirement healthcare benefit cost consisted of the following for the year ended December 31,
|  | 2022 |  |  | 2021 |  |  | 2020 |
Components of net postretirement health benefit cost: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 115 |  |  | $ | 137 |  |  | $ | 147 |
Interest cost |  |  | 153 |  |  |  | 137 |  |  |  | 191 |
Amortization of net gain |  |  | (400 | ) |  |  | (312 | ) |  |  | (310 | )
Net postretirement healthcare benefit cost |  | $ | (132 | ) |  | $ | (38 | ) |  | $ | 28 |
The assumed discount and healthcare cost trend rates are summarized as follows:
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Discount rate |  |  | 2.5 | % |  |  | 2.1 | % |  |  | 3.0 | %
Immediate healthcare cost trend rate |  |  | * |  |  |  | ** |  |  |  | *** |
Ultimate healthcare cost trend rate |  |  | 4.5 |  |  |  | 4.5 |  |  |  | 4.5 |
Assumed annual reduction in trend rate |  |  | * |  |  |  | ** |  |  |  | *** |
Participation |  |  | 60 |  |  |  | 60 |  |  |  | 60 |
* | Health Care Cost Trend rate is assumed to be 7.5% beginning in 2022 gradually reducing to an ultimate rate of 4.5% in 2031.
** | Health Care Cost Trend rate is assumed to be 7.0% beginning in 2021 gradually reducing to an ultimate rate of 4.5% in 2030.
*** | Health Care Cost Trend rate is assumed to be 7.0% beginning in 2020 gradually reducing to an ultimate rate of 4.5% in 2029.
The discount rate used to determine the benefit obligation at December 31, 2022 and 2021 is 5.0% and 2.5%, respectively. For December 31, 2022, the health care cost trend rate is assumed to be 7.5% beginning in 2022 gradually reducing to an ultimate rate of 4.5% in 2031. For December 31, 2021, the health care cost trend rate is assumed to be 7.0% beginning in 2021 gradually reducing to an ultimate rate of 4.5% in 2030. For December 31, 2020, the health care cost trend rate is assumed to be 7.0% beginning in 2020 gradually reducing to an ultimate rate of 4.5% in 2029. No actuarial gains (losses) remain in accumulated other comprehensive income (loss) related to pension due to the termination of the plans. The amount included in accumulated other comprehensive income (loss), net of tax, at December 31, 2022, which has not yet been recognized in net periodic OPEB cost was a net actuarial gain of $3,013. Defined contribution plan The Company has a defined contribution plan, which qualifies under Section 401(k) of the Internal Revenue Code and provides substantially all employees an opportunity to accumulate personal funds for their retirement. Contributions are made on a before‑tax basis to the plan and are invested, at the employees’ direction, among a variety of investment alternatives including, commencing January 1, 2013, a Company common stock fund designated as an employee stock ownership plan. As determined by the provisions of the plan, the Company matches a portion of the employees’ basic voluntary contributions. There were certain plan design changes in the year ended December 31, 2019 which changed the nature of the Company match. The Company matching contributions to the plan were approximately $4,999, $4,334 and $3,899 for the years ended December 31, 2022, 2021 and 2020, respectively. Beginning January 1, 2012, the Company amended its defined contribution plan to permit non‑discretionary employer contributions. The Company made non‑discretionary employer contributions of $0, $0 and $0 in the years ended December 31, 2022, 2021 and 2020, respectively. The Company made discretionary employer contributions of $470 in the year ended December 31, 2021. Non‑qualified plan The Company also maintains a supplemental non‑qualified plan for certain officers and other key employees. Expense for this plan was $378, $475 and $523 for the years ended December 31, 2022, 2021 and 2020, respectively. The amount accrued was $9,420, $11,139 and $9,318 as of December 31, 2022, 2021 and 2020, respectively and is included in Retiree benefits and deferred compensation on the Consolidated Balance Sheets. Amounts were determined based on the fair value of the liability at December 31, 2022, 2021 and 2020, respectively. The Company holds assets that are substantially equivalent to the liability and are intended to fund the liability. Non-qualified plan assets of $8,874 and $10,347 at December 31, 2022 and December 31, 2021, respectively, are included as Non-qualified benefit plan assets on the Consolidated Balance Sheets.

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