Loans Receivable (excluding Covered Loans) (Loan Modifications) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012 Contracts	Dec. 31, 2011 Contracts
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	36	39
Recorded Investment	$ 8,402	$ 9,066
Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	31	36
Recorded Investment	7,498	8,413
Construction, Speculative [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	5	0
Recorded Investment	904	0
Construction, Custom [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	0	0
Land, Acquisition and Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	0	0
Land, Consumer Lot Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	3
Recorded Investment	0	653
Multi Family Housing [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	0	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	0	0
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	0	0
Home Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0
Recorded Investment	$ 0	$ 0