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Note 11 - Employee Benefit Plans (Details Textual) - USD ($) | 12 Months Ended
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Sep. 28, 2024 | Sep. 30, 2023 | Oct. 01, 2022
Supplemental Employee Retirement Plan [Member] |  |  |
Supplemental Retirement Benefit Period (Year) | 15 years |  |
Defined Benefit Plan Percent of Highest Average Salary Base | 50.00% |  |
Defined Benefit Plan Number of Years in Average Annual Base Salary (Year) | 5 years |  |
Defined Benefit Plan Number of Years Preceding Retirement for Average Annual Base Salary Calculation (Year) | 10 years |  |
Defined Benefit Plan, Accumulated Benefit Obligation | $ 11,400,000 | $ 10,600,000 |
Supplemental Employee Retirement Plan [Member] | Minimum [Member] |  |  |
Defined Benefit Plan, Employment Term (Year) | 30 years |  |
Reduced SERP [Member] |  |  |
Defined Benefit Plan Retirement Age | 65 |  |
Defined Benefit Plan, Reduction for Each Month | 0.28% |  |
Reduced SERP [Member] | Minimum [Member] |  |  |
Defined Benefit Plan, Employment Term (Year) | 10 years |  |
Retirement Savings Plan [Member] |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 75.00% |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 50.00% |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 5.00% |  |
Defined Contribution Plan, Cost | $ 1,700,000 | 1,700,000 | $ 1,700,000
Retirement Savings Plan, First 1% of Employee Contribution [Member] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 100.00% |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 1.00% |  |
VEBA [Member] |  |  |
Self-insured Health Insurance Plan, Contribution Cost | $ 6,500,000 | $ 6,500,000 | $ 5,400,000
Healthcare Coverage Claims in Excess of | $ 200,000 |  |

X
- Definition The number of years of continuous service required to receive the maximum benefit under the SERP. + References No definition available. + Details
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X
- Definition The number of consecutive years used to determine a Participant's highest average annual base salary in a supplemental employee retirement plan. + References No definition available. + Details
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- Definition Defined benefit plan number of years preceding retirement for average annual base salary calculation + References No definition available. + Details
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- Definition The percentage of a Participant's highest average base salary that will be paid out to the Participant as supplemental retirement benefits if they meet the continuous service requirement. + References No definition available. + Details
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- Definition The benefit will be reduced by a certain percentage for each month short of 30 years that the Participant was employed by the Company assuming the minimum continuous service and age requirements. + References No definition available. + Details
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- Definition The minimum age that an employee may retire at to receive benefits. + References No definition available. + Details
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X
- Definition Represents the amount at which stop-loss insurance covers the remainder of the claim. + References No definition available. + Details
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- Definition Represents contribution cost for self-insured health plan. + References No definition available. + Details
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- Definition The maximum period of time that a Participant will be paid supplemental retirement benefits if they are eligible for full benefits. + References No definition available. + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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