Commitments and Contingencies (Details 1) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012	Oct. 31, 2011
Company's mortgage commitments
Aggregate mortgage loan commitments	$ 567,998	$ 436,275
Investor commitments to purchase	191,870	190,233
Mortgage loans receivable [Member]
Company's mortgage commitments
Investor commitments to purchase	80,697	60,680
Interest Rate Lock Commitments [Member]
Company's mortgage commitments
Aggregate mortgage loan commitments	111,173	129,553
Investor commitments to purchase	111,173	129,553
Non IRLC [Member]
Company's mortgage commitments
Aggregate mortgage loan commitments	$ 456,825	$ 306,722