Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details)

v3.21.2
Shareholders' Equity (Details)
 12 Months Ended
Sep. 25, 2021
USD ($)
vote
$ / shares
shares
Sep. 26, 2020
USD ($)
$ / shares
shares
Sep. 28, 2019
USD ($)
Sep. 26, 2021
shares
Aug. 31, 2019
USD ($)
Class of Stock [Line Items]          
Preferred stock authorized (in shares) 1,000,000 1,000,000      
Preferred stock, par value (in usd per share) | $ / shares $ 0.01 $ 0.01      
Preferred stock, shares outstanding 0 0      
Repurchased of stock | $ $ 21,839,000 $ 52,254,000 $ 58,115,000    
2019 Repurchase Authorization          
Class of Stock [Line Items]          
Stock repurchase program, authorized amount | $         $ 100,000,000
Stock repurchase program remaining authorized amount | $ $ 100,000,000        
Equity Dilution Authorization | Subsequent Event          
Class of Stock [Line Items]          
Stock repurchase, remaining authorization (in shares)       1,200,000  
Common stock          
Class of Stock [Line Items]          
Common stock authorized (in shares) 80,000,000 80,000,000      
Common stock, par value (in usd per share) | $ / shares $ 0.01 $ 0.01      
Common stock, shares outstanding (in shares) 11,335,658 11,336,358      
Class A common stock          
Class of Stock [Line Items]          
Common stock authorized (in shares) 100,000,000 100,000,000      
Common stock, par value (in usd per share) | $ / shares $ 0.01 $ 0.01      
Common stock, shares outstanding (in shares) 42,282,922 41,856,626      
Class B stock          
Class of Stock [Line Items]          
Common stock authorized (in shares) 3,000,000 3,000,000      
Common stock, par value (in usd per share) | $ / shares $ 0.01 $ 0.01      
Common stock, shares outstanding (in shares) 1,612,374 1,612,374      
Percentage of vote cast for shares (percent) 49.00%        
Convertible shares conversion ratio 1        
Class B stock | Minimum          
Class of Stock [Line Items]          
Number of voting powers | vote 1        
Class B stock | Maximum          
Class of Stock [Line Items]          
Number of voting powers | vote 10        
Non voting common stock          
Class of Stock [Line Items]          
Repurchased of stock (in shares) 500,000        
Repurchased of stock | $ $ 21,800,000        
Repurchases of stock (in usd per share) | $ / shares $ 41.91