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Loans Receivable (excluding Covered Loans) Loans on Non-accrual Status (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 210,465	$ 245,532
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	100.00%	100.00%
Single family residential loans as percentage of restructured loans	82.00%
Approximate rate reduction concession, minimum	1.00%
Approximate rate reduction concession, maximum	2.00%
Single Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	126,624	123,624
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	60.30%	50.30%
Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	15,383	39,915
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	7.30%	16.30%
Construction, Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	635	0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.30%	0.00%
Land, Acquisition and Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	37,339	64,883
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	17.70%	26.40%
Land, Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	8,843	0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	4.20%	0.00%
Multi Family Housing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	7,664	4,931
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	3.60%	2.00%
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	11,380	10,831
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	5.40%	4.40%
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	1,679	371
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.80%	0.20%
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	481	0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.20%	0.00%
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 437	$ 977
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.20%	0.40%

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Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.

+ References

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph g

-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 310

-SubTopic 10

-Section 50

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Loan Modification, Basis Point Reduction, Maximum

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Single Family Residential Loans as Percentage of Restructured Loans

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