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Note 9 - Retirement Plans (Tables) | 9 Months Ended
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Dec. 30, 2023
Notes Tables |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | December 30, |  |  | December 31, |  |  | December 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Service cost including administration |  | $ | 1,327 |  |  | $ | 1,310 |  |  | $ | 4,800 |  |  | $ | 6,180 |
Interest cost |  |  | 2,914 |  |  |  | 2,193 |  |  |  | 8,550 |  |  |  | 6,941 |
Expected return on plan assets |  |  | (4,926 | ) |  |  | (4,027 | ) |  |  | (13,275 | ) |  |  | (12,079 | )
Amortization of prior service cost |  |  | 22 |  |  |  | 22 |  |  |  | 60 |  |  |  | 68 |
Amortization of net loss |  |  | 165 |  |  |  | (205 | ) |  |  | 165 |  |  |  | - |
Net periodic benefit (income) cost |  | $ | (498 | ) |  | $ | (707 | ) |  | $ | 300 |  |  | $ | 1,110 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-4 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-2 + Details
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