v3.22.2.2
Note 9 - Stock-based Compensation (Details Textual) - USD ($)
12 Months Ended
Feb. 11, 2020
Oct. 01, 2022
Oct. 02, 2021
Oct. 03, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 14.67 $ 14.47 $ 8.05
Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period   3 years    
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period   10 years    
Share-Based Payment Arrangement, Expense   $ 1,100,000 $ 860,000 $ 810,000
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   $ 714,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   2 years 1 month 9 days    
Restricted Stock Units (RSUs) [Member]        
Share-Based Payment Arrangement, Expense   $ 1,365,000 $ 1,128,000 $ 1,218,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   1 year 8 months 23 days    
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount   $ 1,100,000    
Restricted Stock Units (RSUs) [Member] | Director [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period   1 year    
Restricted Stock Units (RSUs) [Member] | Employees [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period   3 years    
The 2015 Equity Incentive Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized 750,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant   555,000