Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Jul. 31, 2016	Oct. 31, 2015
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,663,247	$ 1,257,427
Investor commitments to purchase	564,606	432,043
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	404,433	316,184
Investor commitments to purchase	404,433	316,184
Non Interest Rate Lock Commitments [Member] [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,258,814	941,243
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 160,173	$ 115,859