Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Oct. 31, 2020	Oct. 31, 2019
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 2,069,917	$ 1,930,606
Investor commitments to purchase	598,992	774,225
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	381,116	565,634
Investor commitments to purchase	381,116	565,634
Non IRLC [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,688,801	1,364,972
Mortgage loans receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 217,876	$ 208,591