Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,497,612	$ 1,350,508
Investor commitments to purchase	476,450	487,045
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	350,740	255,647
Investor commitments to purchase	350,740	255,647
Non IRLC [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,146,872	1,094,861
Mortgage loans receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 125,710	$ 231,398