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Stock-Based Compensation - Restricted Stock Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Dec. 09, 2021
Dec. 02, 2020
Dec. 05, 2019
Apr. 30, 2022
Apr. 30, 2021
Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period       3 years  
Grants (in shares)       36,669 28,826
Granted (in usd per share)       $ 22.52 $ 18.79
Nonvested (in shares)       21,774  
Vested (in usd per share)       $ 17.08  
Cash paid to settle vested units       $ 1,000 $ 800
Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grants (in shares)       87,919  
Performance shares granted 80,900 65,300 55,900    
Return On Net Assets $ 22.54 $ 20.68 $ 19.40    
Performance shares forfeited 0 0 5,300