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Loans Receivable (excluding Covered Loans) (Loan Modifications) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014 contract	Mar. 31, 2013 contract	Mar. 31, 2014 contract	Mar. 31, 2013 contract
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	24	41	42	60
Recorded Investment	$ 4,301	$ 8,886	$ 7,425	$ 14,313
Single-Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	23	37	38	55
Recorded Investment	4,218	8,579	7,067	13,704
Construction - Speculative [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Recorded Investment	0	0	0	0
Construction - Custom [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Recorded Investment	0	0	0	0
Land - Acquisition & Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Recorded Investment	0	0	0	0
Land - Consumer Lot Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	1	1	4	1
Recorded Investment	83	139	358	139
Multi-Family [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	1	0	1
Recorded Investment	0	55	0	55
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0	0	1
Recorded Investment	0	0	0	302
Commercial & Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Recorded Investment	0	0	0	0
HELOC [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	2	0	2
Recorded Investment	0	113	0	113
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0

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