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Note 7 - Pension and Other Postretirement Benefits (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Schedule of Costs of Retirement Plans [Table Text Block] |
|  | Pension Benefits |  |  | Postretirement Benefits |
|  | Three Months Ended June 30, |  |  | Three Months Ended June 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Service cost |  | $ | 530 |  |  | $ | 482 |  |  | $ | 209 |  |  | $ | 287 |
Interest cost |  |  | 635 |  |  |  | 711 |  |  |  | 299 |  |  |  | 190 |
Expected return on plan assets |  |  | (657 | ) |  |  | (692 | ) |  |  | - |  |  |  | - |
Amortization of prior service cost |  |  | - |  |  |  | - |  |  |  | (249 | ) |  |  | (283 | )
Recognized actuarial loss |  |  | 301 |  |  |  | 481 |  |  |  | (9 | ) |  |  | 92 |
Settlement loss |  |  | - |  |  |  | 1,597 |  |  |  | - |  |  |  | - |
Net periodic benefit cost (a) |  | $ | 809 |  |  | $ | 2,579 |  |  | $ | 250 |  |  | $ | 286 |
| Pension Benefits |  | Postretirement Benefits |
| Six Months Ended June 30, |  | Six Months Ended June 30, |
| 2023 |  | 2022 |  | 2023 |  | 2022 |
Service cost | $ | 1,060 |  | $ | 1,146 |  | $ | 417 |  | $ | 573 |
Interest cost |  | 1,270 |  |  | 1,165 |  |  | 598 |  |  | 380 |
Expected return on plan assets |  | (1,314 | ) |  | (1,504 | ) |  | - |  |  | - |
Amortization of prior service cost |  | - |  |  | - |  |  | (497 | ) |  | (565 | )
Recognized actuarial loss |  | 601 |  |  | 935 |  |  | (18 | ) |  | 184 |
Settlement loss |  | - |  |  | 1,597 |  |  | - |  |  | - |
Net periodic benefit cost (a) | $ | 1,617 |  | $ | 3,339 |  | $ | 500 |  | $ | 572 |

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- References No definition available. + Details
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