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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 ($) contract | Mar. 31, 2016 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |
Troubled debt restructurings, End of Period Balance |  | $ 13,718 | $ 8,455
Portfolio Segment |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Contracts | contract |  | 1 |
Pre-Modification Outstanding Recorded Investment |  | $ 48 |
Post-Modification Outstanding Recorded Investment |  | 48 |
Troubled debt restructurings, End of Period Balance |  | $ 48 |
Portfolio Segment | Mortgage loans, one-to-four family |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Contracts | contract | [1] | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 48 |
Post-Modification Outstanding Recorded Investment | [1] | 48 |
Troubled debt restructurings, End of Period Balance | [1] | $ 48 |
[1] | Modification was a result of a reduction in the stated interest rate.

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