v3.22.2.2
Note 11 - Employee Benefit Plans (Details Textual) - USD ($)
 12 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 03, 2020
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 $ 10,700,000 $ 11,700,000  
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 1,500,000 $ 1,300,000
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 $ 5,400,000 $ 6,400,000 $ 6,000,000.0
Healthcare Coverage Claims in Excess of $ 175,000