Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,943,929	$ 1,497,612
Investor commitments to purchase	777,463	476,450
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	614,255	350,740
Investor commitments to purchase	614,255	350,740
Non IRLC [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,329,674	1,146,872
Mortgage loans receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 163,208	$ 125,710