Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Jan. 31, 2019	Oct. 31, 2018
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,936,182	$ 1,943,929
Investor commitments to purchase	809,311	777,463
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	730,899	614,255
Investor commitments to purchase	730,899	614,255
Non Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,205,283	1,329,674
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 78,412	$ 163,208