MBS And Other Investments: Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Jun. 30, 2013	Jun. 30, 2012
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning balance of credit loss	$ 2,703	$ 3,361
Additions, Credit losses for which OTTI was not previously recognized	5	81
Additions, Additional increases to the amount related to credit loss for which OTTI was previously recognized	39	109
Subtractions, Realized losses previously recorded as credit losses	(571)	(661)
Ending balance of credit loss	$ 2,176	$ 2,890

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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This item represents reductions in the amount of cumulative losses recognized in earnings for other than temporary impairments (OTTI) for which a portion of the impairment had been recognized in other comprehensive income (a component of shareholders' equity) due to a change in status of the impaired security because of a change in the entity's intent to either sell the impaired security or it has become more likely than not that the entity will be required to sell the security before recovery of its cost basis.

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