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Note 10 (Detail) (USD $)	Jul. 31, 2012	Oct. 31, 2011
Letters of Credit Outstanding, Amount	$ 32,300,000	$ 54,100,000
Minimum [Member] | Reference Rate [Member] | Chase Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	1.625%
Minimum [Member] | Reference Rate [Member] | Customers Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	3.50%
Minimum [Member] | Reference Rate [Member] | Credit Suisse Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	0.74%
Minimum [Member] | Spread [Member] | Chase Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	2.50%
Minimum [Member] | Spread [Member] | Customers Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	3.00%
Minimum [Member] | Spread [Member] | Credit Suisse Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	3.75%
Maximum [Member] | Spread [Member] | Chase Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	3.00%
Maximum [Member] | Spread [Member] | Customers Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	5.50%
Maximum [Member] | Spread [Member] | Credit Suisse Master Repurchase Agreement [Member]
Assets Sold under Agreements to Repurchase, Interest Rate	4.00%
Letters of Credit Collateral [Member]
Cash Collateral for Borrowed Securities	32,800,000	57,700,000
Through November 1 [Member] | Chase Master Repurchase Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity	75,000,000
After November 1 [Member] | Chase Master Repurchase Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity	50,000,000
Chase Master Repurchase Agreement [Member]
Warehouse Agreement Borrowings	56,200,000
Customers Master Repurchase Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity	37,500,000
Warehouse Agreement Borrowings	22,000,000
Credit Suisse Master Repurchase Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 25,000,000

X

- Definition

Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph m

-Subparagraph 1

-Article 4



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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Balance Type:	na
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X

- Definition

Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.1)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.(a),2)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 2

-Article 7

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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X

- Definition

Carrying value as of the balance sheet date of the outstanding short-term borrowings under a revolving line of credit used by mortgage bankers to finance the origination or purchase of loans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

-Article 9

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