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Stock-Based Compensation (Narrative) (Details) - Stock Incentive Plan 2017 - shares
shares in Thousands
12 Months Ended
Oct. 03, 2020
Mar. 28, 2020
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares)   500 1,500
Shares available for future grant under stock plan (in shares) 1,010    
Expiration date Jun. 06, 2027