Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Jan. 31, 2017	Oct. 31, 2016
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,531,009	$ 1,350,508
Investor commitments to purchase	423,947	487,045
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	352,279	255,647
Investor commitments to purchase	352,279	255,647
Non Interest Rate Lock Commitments [Member] [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,178,730	1,094,861
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 71,668	$ 231,398