MBS And Other Investments: Narrative-OTTI charges recorded through earnings (Details) (Mortgage-backed Securities, Private label residential, USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Mortgage-backed Securities, Private label residential
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
OTTI charges recognized in earnings	$ 3	$ 37	$ 39	$ 190

- Definition

The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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