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Retirement Plans - Components of Net Periodic Benefit Cost (Details) - Pension Plan - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Defined Benefit Plan Disclosure [Line Items]    
Administrative expenses $ 278 $ 188
Interest cost 641 828
Expected return on plan assets (990) (1,088)
Prior service cost 45 45
Amortization of net loss 739 402
Net periodic benefit cost $ 713 $ 375