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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, 2012	Sep. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 173,427	$ 210,465
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	83.00%
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	131,193	126,624
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	75.70%	60.30%
Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	10,634	15,383
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	6.10%	7.30%
Construction, Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	539	635
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.30%	0.30%
Land, Acquisition and Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	13,477	37,339
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	7.80%	17.70%
Land, Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	5,149	8,843
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	3.00%	4.20%
Multi Family Housing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	4,185	7,664
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	2.40%	3.60%
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	7,653	11,380
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	4.40%	5.40%
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	16	1,679
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	0.80%
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	198	481
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.10%	0.20%
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 383	$ 437
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.20%	0.20%
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term for payment and rate reduction	6 months
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term for payment and rate reduction	12 months

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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 FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524



Reference 2: 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.

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