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Note 11 - Retirement Plans (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Net Funded Status [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
Change in projected benefit obligation: |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of year |  | $ | 102 |  |  | $ | 140 |
Interest cost |  |  | 5 |  |  |  | 4 |
Actuarial loss (gain) |  |  | 2 |  |  |  | (38 | )
Benefits paid |  |  | (5 | ) |  |  | (4 | )
Projected benefit obligation at end of year |  | $ | 104 |  |  | $ | 102 |
Change in plan assets: |  |  |  |  |  |  |  |
Fair value of pension plan assets at beginning of year |  | $ | 104 |  |  | $ | 119 |
Actual return (loss) on plan assets |  |  | 14 |  |  |  | (14 | )
Company contributions |  |  | 4 |  |  |  | 4 |
Benefits paid |  |  | (5 | ) |  |  | (5 | )
Fair value of pension plan assets at end of year |  |  | 117 |  |  |  | 104 |
Funded status of pension plan |  | $ | 13 |  |  | $ | 2 |
Amounts recognized on our balance sheets consist of: |  |  |  |  |  |  |  |
Accrued benefit cost |  | $ | 26 |  |  | $ | 21 |
Accumulated other comprehensive loss |  |  | (13 | ) |  |  | (19 | )
Net asset (liability) recognized |  | $ | 13 |  |  | $ | 2 |
Defined Benefit Plan, Assumptions [Table Text Block] |
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |
Weighted-average assumptions used to determine net periodic benefit cost for the Gray Pension Plan: |  |  |  |  |  |  |  |
Discount rate |  |  | 4.99 | % |  |  | 2.73 | %
Expected long-term rate of return on pension plan assets |  |  | 6.25 | % |  |  | 6.25 | %
Estimated rate of increase in compensation levels |  |  | N/A |  |  |  | N/A |
|  | As of December 31, |
|  | 2023 |  |  | 2022 |
Weighted-average assumptions used to determine benefit obligations: |  |  |  |  |  |  |  |
Discount rate |  |  | 4.79 | % |  |  | 4.99 | %
Schedule of Net Benefit Costs [Table Text Block] |
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Components of net periodic pension cost: |  |  |  |  |  |  |  |  |  |  |  |
Interest cost |  | $ | 5 |  |  | $ | 4 |  |  | $ | 4 |
Expected return on plan assets |  |  | (7 | ) |  |  | (8 | ) |  |  | (7 | )
Recognized net actuarial loss |  |  | - |  |  |  | 1 |  |  |  | 1 |
Net periodic pension benefit |  | $ | (2 | ) |  | $ | (3 | ) |  | $ | (2 | )
Schedule of Expected Benefit Payments [Table Text Block] |
| Years |  |  | Amount |
|  | 2024 |  |  |  | $ | 5 |
|  | 2025 |  |  |  | $ | 5 |
|  | 2026 |  |  |  | $ | 6 |
|  | 2027 |  |  |  | $ | 6 |
|  | 2028 |  |  |  | $ | 6 |
| 2029 | - | 2033 |  |  | $ | 32 |
Schedule of Allocation of Plan Assets by Asset Category [Table Text Block] |
|  | As of December 31, |
|  | 2023 |  |  | 2022 |
Asset category: |  |  |  |  |  |  |  |
Insurance general account |  |  | 13 | % |  |  | 14 | %
Cash management accounts |  |  | 4 | % |  |  | 4 | %
Equity accounts |  |  | 50 | % |  |  | 51 | %
Fixed income accounts |  |  | 30 | % |  |  | 28 | %
Real estate accounts |  |  | 3 | % |  |  | 3 | %
Total |  |  | 100 | % |  |  | 100 | %
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Target Range |
Asset class: |  | Strategic Allocation |  |  | Lower Limit |  |  | Upper Limit |
Equities: |  |  |  |  |  |  |  |  |  |  |  |
Large Cap Blend |  |  | 27.0 | % |  |  | 0.0 | % |  |  | 50.0 | %
Mid Cap Blend |  |  | 10.0 | % |  |  | 0.0 | % |  |  | 40.0 | %
Small Cap Blend |  |  | 6.0 | % |  |  | 0.0 | % |  |  | 25.0 | %
Foreign Large Blend |  |  | 11.0 | % |  |  | 0.0 | % |  |  | 40.0 | %
Emerging Markets |  |  | 3.0 | % |  |  | 0.0 | % |  |  | 25.0 | %
Real Estate |  |  | 3.0 | % |  |  | 0.0 | % |  |  | 20.0 | %
Fixed Income: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury Inflation Protected |  |  | 3.5 | % |  |  | 0.0 | % |  |  | 25.0 | %
Intermediate Core Plus Bond |  |  | 25.0 | % |  |  | 0.0 | % |  |  | 50.0 | %
Short-Term Bond |  |  | 3.0 | % |  |  | 0.0 | % |  |  | 25.0 | %
Bank Loan |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 25.0 | %
High Yield Bond |  |  | 4.0 | % |  |  | 0.0 | % |  |  | 25.0 | %
Emerging Markets Bond |  |  | 3.0 | % |  |  | 0.0 | % |  |  | 20.0 | %
Money Market Taxable |  |  | 1.5 | % |  |  | 0.0 | % |  |  | 100.0 | %
Defined Benefit Plan, Fair Value of Plan Assets [Table Text Block] |
|  | As of December 31, 2023 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance general account |  | $ | - |  |  | $ | 15 |  |  | $ | - |  |  | $ | 15 |
Cash management accounts |  |  | 5 |  |  |  | - |  |  |  | - |  |  |  | 5 |
Equity accounts |  |  | 59 |  |  |  | - |  |  |  | - |  |  |  | 59 |
Fixed income accounts |  |  | 35 |  |  |  | - |  |  |  | - |  |  |  | 35 |
Real estate accounts |  |  | 3 |  |  |  | - |  |  |  | - |  |  |  | 3 |
Total |  | $ | 102 |  |  | $ | 15 |  |  | $ | - |  |  | $ | 117 |
|  | As of December 31, 2022 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance general account |  | $ | - |  |  | $ | 15 |  |  | $ | - |  |  | $ | 15 |
Cash management accounts |  |  | 4 |  |  |  | - |  |  |  | - |  |  |  | 4 |
Equity accounts |  |  | 53 |  |  |  | - |  |  |  | - |  |  |  | 53 |
Fixed income account |  |  | 29 |  |  |  | - |  |  |  | - |  |  |  | 29 |
Real estate accounts |  |  | 3 |  |  |  | - |  |  |  | - |  |  |  | 3 |
Total |  | $ | 89 |  |  | $ | 15 |  |  | $ | - |  |  | $ | 104 |

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