Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,768,097	$ 1,497,612
Investor commitments to purchase	524,543	476,450
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	459,971	350,740
Investor commitments to purchase	459,971	350,740
Non Interest Rate Lock Commitments [Member] [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,308,126	1,146,872
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 64,572	$ 125,710