Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Oct. 31, 2021	Oct. 31, 2020
Company's mortgage commitments
Aggregate mortgage loan commitments	$ 3,233,899	$ 2,069,917
Investor commitments to purchase	772,503	598,992
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Aggregate mortgage loan commitments	528,127	381,116
Investor commitments to purchase	528,127	381,116
Non IRLC [Member]
Company's mortgage commitments
Aggregate mortgage loan commitments	2,705,772	1,688,801
Mortgage loans receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 244,376	$ 217,876