Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Apr. 30, 2020	Oct. 31, 2019
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 2,224,206	$ 1,930,606
Investor commitments to purchase	667,435	774,225
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	537,787	565,634
Investor commitments to purchase	537,787	565,634
Non Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,686,419	1,364,972
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 129,648	$ 208,591