Annual report pursuant to Section 13 and 15(d)

Note 12 - Stock-based Compensation - Unvested Restricted Stock Units and Performance Units (Details)

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Note 12 - Stock-based Compensation - Unvested Restricted Stock Units and Performance Units (Details) - $ / shares
Oct. 03, 2020
Sep. 28, 2019
Sep. 29, 2018
Number of units (in shares) 406,000 283,500 532,500
Average market price on date of grant (in dollars per share) $ 20.16 $ 19.78 $ 16.12
The 2020 Stock Plan [Member]      
Number of units (in shares) 406,000    
Average market price on date of grant (in dollars per share)    
Performance Shares [Member] | The 2010 Stock Plan [Member] | Vesting On November 2020 [Member]      
Number of units (in shares) 42,000    
Average market price on date of grant (in dollars per share) $ 17.97    
Performance Shares [Member] | The 2020 Stock Plan [Member] | Vesting On November 2021 [Member]      
Number of units (in shares) 58,000    
Average market price on date of grant (in dollars per share) $ 23.15    
Restricted Stock Units (RSUs) [Member] | The 2010 Stock Plan [Member] | Vesting On November 2020 [Member]      
Number of units (in shares) 74,000    
Average market price on date of grant (in dollars per share) $ 19.52    
Restricted Stock Units (RSUs) [Member] | The 2020 Stock Plan [Member] | Vesting On November 2021 [Member]      
Number of units (in shares) 108,000    
Restricted Stock Units (RSUs) [Member] | The 2020 Stock Plan [Member] | Vesting On November 2022 [Member]      
Number of units (in shares) 124,000    
Average market price on date of grant (in dollars per share) $ 21.63    
Restricted Stock Units (RSUs) [Member] | Vesting On November 2021 [Member] | Vesting On November 2021 [Member]      
Average market price on date of grant (in dollars per share) $ 18.15