Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Jul. 31, 2017	Oct. 31, 2016
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,679,699	$ 1,350,508
Investor commitments to purchase	503,419	487,045
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	422,782	255,647
Investor commitments to purchase	422,782	255,647
Non Interest Rate Lock Commitments [Member] [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,256,917	1,094,861
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 80,637	$ 231,398