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Loans Receivable And Allowance For Loan Losses: Schedule of Troubled Debt Restructurings by Portfolio Segment (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2015 USD ($) contract	Sep. 30, 2014 USD ($) contract	Sep. 30, 2013 USD ($) contract
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, End of Period Balance	$ 13,718	$ 19,088
Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	2
Pre- Modification Outstanding Recorded Investment	$ 48	$ 199	$ 2,680
Post- Modification Outstanding Recorded Investment	48	199	2,680
Troubled debt restructurings, End of Period Balance	$ 48	$ 195	$ 2,668
Portfolio Segment [Member] | One-to-four family
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1	2
Pre- Modification Outstanding Recorded Investment	$ 48	$ 42	$ 353
Post- Modification Outstanding Recorded Investment	48	42	353
Troubled debt restructurings, End of Period Balance	$ 48	$ 42	$ 350
Portfolio Segment [Member] | Commercial
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract		1	2
Pre- Modification Outstanding Recorded Investment		$ 157	$ 2,327
Post- Modification Outstanding Recorded Investment		157	2,327
Troubled debt restructurings, End of Period Balance		$ 153	$ 2,318

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Number of financing receivables that have been modified by troubled debt restructurings.

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