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Shareholders' Equity (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 02, 2021
Oct. 03, 2020
Sep. 28, 2019
Nov. 20, 2020
Class A Common Stock        
Class of Stock        
Common stock voting rights one-tenth      
Minimum percentage of the board of directors to be elected by class of shares 25.00%      
Class B Common Stock        
Class of Stock        
Common stock voting rights one      
Common stock conversion basis one-for-one      
Preferred Stock        
Class of Stock        
Preferred stock, shares authorized 10,000,000      
2014 Long Term Incentive Plan        
Class of Stock        
Number of shares authorized for awards available for grant 883,111      
Share Repurchase Program - November 2020 | Class A and Class B Common Stock        
Class of Stock        
Stock Repurchase Program, Number of Shares Authorized to be Repurchased       3,000,000
Stock repurchased during period, shares 243,147      
Stock repurchased during period, value $ 19,253      
Stock repurchase program, remaining number of shares authorized to be repurchased 2,756,853      
Share Repurchase Program | Class A and Class B Common Stock        
Class of Stock        
Stock repurchased during period, shares 155,963 2,881,116 302,184  
Stock repurchased during period, value $ 10,193 $ 215,776 $ 23,358  
Stock repurchase program, remaining number of shares authorized to be repurchased 0