Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Jan. 31, 2020	Oct. 31, 2019
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 2,049,668	$ 1,930,606
Investor commitments to purchase	666,063	774,225
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	565,001	565,634
Investor commitments to purchase	565,001	565,634
Non Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,484,667	1,364,972
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 101,062	$ 208,591