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Note 9 - Retirement Plans (Tables) | 6 Months Ended
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Sep. 28, 2024
Notes Tables |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | September 28, |  |  | September 30, |  |  | September 28, |  |  | September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Service cost including administrative expenses |  | $ | 1,590 |  |  | $ | 1,737 |  |  | $ | 3,181 |  |  | $ | 3,473 |
Interest cost |  |  | 2,941 |  |  |  | 2,818 |  |  |  | 5,883 |  |  |  | 5,636 |
Expected return on plan assets |  |  | (4,422 | ) |  |  | (4,175 | ) |  |  | (8,845 | ) |  |  | (8,349 | )
Amortization of net loss |  |  | 76 |  |  |  | - |  |  |  | 152 |  |  |  | - |
Amortization of prior service cost |  |  | 3 |  |  |  | 19 |  |  |  | 5 |  |  |  | 38 |
Net periodic benefit cost |  | $ | 188 |  |  | $ | 399 |  |  | $ | 376 |  |  | $ | 798 |

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