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Note 9 - Pensions and Other Postretirement Benefits (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Changes in Projected Benefit Obligations [Table Text Block] |
|  | Pension Plans |  |  | Postretirement Plan |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Accumulated benefit obligation at end of year |  | $ | 50,114 |  |  | $ | 45,756 |  |  | $ | 24,276 |  |  | $ | 23,954 |
Change in projected benefit obligation: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 55,930 |  |  | $ | 82,000 |  |  | $ | 23,954 |  |  | $ | 28,934 |
Service cost |  |  | 2,180 |  |  |  | 2,378 |  |  |  | 835 |  |  |  | 1,146 |
Interest cost |  |  | 2,652 |  |  |  | 2,326 |  |  |  | 1,196 |  |  |  | 760 |
Settlement |  |  | - |  |  |  | 1,656 |  |  |  | - |  |  |  | - |
Benefits paid |  |  | (1,646 | ) |  |  | (17,826 | ) |  |  | (1,796 | ) |  |  | (1,781 | )
Effect of foreign exchange |  |  | - |  |  |  | - |  |  |  | 6 |  |  |  | (28 | )
Actual expenses |  |  | (161 | ) |  |  | (150 | ) |  |  | - |  |  |  | - |
Actuarial (gain)/loss |  |  | 3,194 |  |  |  | (14,454 | ) |  |  | 81 |  |  |  | (5,077 | )
Benefit obligation at end of year |  | $ | 62,149 |  |  | $ | 55,930 |  |  | $ | 24,276 |  |  | $ | 23,954 |
Change in plan assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan assets at beginning of year |  | $ | 46,600 |  |  | $ | 72,658 |  |  | $ | - |  |  | $ | - |
Actual return on plan assets |  |  | 3,606 |  |  |  | (10,332 | ) |  |  | - |  |  |  | - |
Employer contributions |  |  | 2,250 |  |  |  | 2,250 |  |  |  | 1,796 |  |  |  | 1,781 |
Benefits paid |  |  | (1,646 | ) |  |  | (17,826 | ) |  |  | (1,796 | ) |  |  | (1,781 | )
Actual expenses |  |  | (161 | ) |  |  | (150 | ) |  |  | - |  |  |  | - |
Plan assets at end of year |  | $ | 50,649 |  |  | $ | 46,600 |  |  | $ | - |  |  | $ | - |
Funded status at end of year |  | $ | (11,500 | ) |  | $ | (9,330 | ) |  | $ | (24,276 | ) |  | $ | (23,954 | )
|  | Pension Plans |  |  | Postretirement Plan |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Amounts recognized in the Consolidated Balance Sheets consist of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  | $ | - |  |  | $ | - |  |  | $ | (1,490 | ) |  | $ | (1,541 | )
Noncurrent liabilities |  |  | (11,500 | ) |  |  | (9,330 | ) |  |  | (22,786 | ) |  |  | (22,413 | )
Total assets (liabilities) |  | $ | (11,500 | ) |  | $ | (9,330 | ) |  | $ | (24,276 | ) |  | $ | (23,954 | )
Amounts recognized in Accumulated other comprehensive loss consist of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  | $ | 19,084 |  |  | $ | 18,290 |  |  | $ | (236 | ) |  | $ | 308 |
Prior Service Cost |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (995 | )
Deferred tax (benefit) expense |  |  | (4,803 | ) |  |  | (4,607 | ) |  |  | 135 |  |  |  | 242 |
After tax actuarial loss |  | $ | 14,281 |  |  | $ | 13,683 |  |  | $ | (101 | ) |  | $ | (445 | )
Schedule of Costs of Retirement Plans [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Pension Plans |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 2,180 |  |  | $ | 2,400 |  |  | $ | 2,662 |
Interest cost |  |  | 2,652 |  |  |  | 2,326 |  |  |  | 1,729 |
Expected return on plan assets |  |  | (2,695 | ) |  |  | (2,892 | ) |  |  | (3,610 | )
Recognized actuarial loss |  |  | 1,461 |  |  |  | 1,724 |  |  |  | 1,904 |
Settlement loss |  |  | - |  |  |  | 6,427 |  |  |  | 2,304 |
Net periodic benefit cost |  | $ | 3,598 |  |  | $ | 9,985 |  |  | $ | 4,989 |
Other changes in pension plan assets and benefit obligations recognized in other comprehensive loss: |  |  |  |  |  |  |  |  |  |  |  |
Net (gain) loss |  |  | 822 |  |  |  | (7,726 | ) |  |  | (2,879 | )
Total expense recognized in net periodic benefit cost and other comprehensive income |  | $ | 4,420 |  |  | $ | 2,259 |  |  | $ | 2,110 |
Postretirement Plan |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 835 |  |  | $ | 1,146 |  |  | $ | 1,462 |
Interest costs |  |  | 1,196 |  |  |  | 760 |  |  |  | 654 |
Prior service cost recognition |  |  | (995 | ) |  |  | (1,128 | ) |  |  | (1,130 | )
Recognized actuarial loss (gain) |  |  | (38 | ) |  |  | 368 |  |  |  | 580 |
Net periodic benefit cost (credit) |  | $ | 998 |  |  | $ | 1,146 |  |  | $ | 1,566 |
Other changes in postretirement plan assets and benefit obligations recognized in other comprehensive loss: |  |  |  |  |  |  |  |  |  |  |  |
Net loss (gain) |  | $ | 1,114 |  |  | $ | (4,317 | ) |  | $ | (863 | )
Total expense (benefit) recognized in net periodic benefit cost and other comprehensive income |  | $ | 2,112 |  |  | $ | (3,171 | ) |  | $ | 703 |
Defined Benefit Plan, Assumptions [Table Text Block] |
|  | Pension Plans |  |  | Postretirement Plan |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Weighted-average assumptions used to determine benefit obligations at December 31: |  |  |  |  |  |  |
Discount rate |  |  | 4.69 | % |  |  | 4.89 | % |  |  | 4.86 | % |  |  | 5.16 | %
Rate of compensation increase |  |  | 3.50 | % |  |  | 3.50 | % |  |  | - |  |  |  | - |
Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31: |  |  |  |  |  |  |
Discount rate |  |  | 4.89 | % |  |  | 4.43 | % |  |  | 5.16 | % |  |  | 2.70 | %
Expected long-term rate of return on plan assets |  |  | 6.20 | % |  |  | 5.00 | % |  |  | - |  |  |  | - |
Rate of compensation increase |  |  | 3.50 | % |  |  | 3.50 | % |  |  | - |  |  |  | - |
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Plan Assets at December 31, 2023 |
Equity |  | $ | 13,660 |  |  | $ | - |  |  | $ | - |  |  | $ | 13,660 |
Fixed income |  |  | 8,913 |  |  |  | 18,579 |  |  |  | - |  |  |  | 27,492 |
Mutual funds |  |  | 3,684 |  |  |  | - |  |  |  | - |  |  |  | 3,684 |
Money funds and cash |  |  | 2,047 |  |  |  | 3,766 |  |  |  | - |  |  |  | 5,813 |
Total fair value of Plan assets |  | $ | 28,304 |  |  | $ | 22,345 |  |  | $ | - |  |  | $ | 50,649 |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Plan Assets at December 31, 2022 |
Equity |  | $ | 7,157 |  |  | $ | - |  |  | $ | - |  |  | $ | 7,157 |
Fixed income |  |  | 5,052 |  |  |  | 27,045 |  |  |  | - |  |  |  | 32,097 |
Mutual funds |  |  | 2,406 |  |  |  | - |  |  |  | - |  |  |  | 2,406 |
Money funds and cash |  |  | 1,527 |  |  |  | 3,413 |  |  |  | - |  |  |  | 4,940 |
Total fair value of Plan assets |  | $ | 16,142 |  |  | $ | 30,458 |  |  | $ | - |  |  | $ | 46,600 |
Schedule of Expected Benefit Payments [Table Text Block] |
|  | 2024 |  |  | 2025 |  |  | 2026 |  |  | 2027 |  |  | 2028 |  |  | Thereafter |
Pension |  | $ | 9,100 |  |  | $ | 3,676 |  |  | $ | 3,024 |  |  | $ | 3,995 |  |  | $ | 4,771 |  |  | $ | 28,598 |
Postretirement |  |  | 1,530 |  |  |  | 1,627 |  |  |  | 1,658 |  |  |  | 1,728 |  |  |  | 1,783 |  |  |  | 10,695 |

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