Commitments and Contingencies (Details 1) - Loan Origination Commitments [Member] - USD ($) $ in Thousands	Apr. 30, 2019	Oct. 31, 2018
Company's mortgage commitments
Unused Commitments to Extend Credit	$ 1,927,256	$ 1,943,929
Investor commitments to purchase	928,604	777,463
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	813,497	614,255
Investor commitments to purchase	813,497	614,255
Non Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Unused Commitments to Extend Credit	1,113,759	1,329,674
Mortgage Receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	$ 115,107	$ 163,208