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MBS And Other Investments: Schedule of Other than Temporary Impairments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended				6 Months Ended				3 Months Ended				6 Months Ended
	Sep. 30, 2013	Mar. 31, 2014 Held-to-maturity Securities		Mar. 31, 2013 Held-to-maturity Securities		Mar. 31, 2014 Held-to-maturity Securities		Mar. 31, 2013 Held-to-maturity Securities		Mar. 31, 2014 Available-for-sale Securities		Mar. 31, 2013 Available-for-sale Securities		Mar. 31, 2014 Available-for-sale Securities		Mar. 31, 2013 Available-for-sale Securities
Held to Maturity
Total recoveries (OTTI)		$ 89		$ 4		$ 86		$ (2)
Portion of OTTI recognized in other comprehensive (income) loss (before income taxes)		0		(29)		1		(32)
Net OTTI recognized in earnings	(57)	89	[1]	(25)	[1]	87	[1]	(34)	[1]
Available for Sale
Total recoveries (OTTI)										0		0		0		(1)
Portion of OTTI recognized in other comprehensive (income) loss (before income taxes)										0		0		0		0
Net OTTI recognized in earnings										$ 0	[1]	$ 0	[1]	$ 0	[1]	$ (1)	[1]
[1] Represents net recoveries (OTTI) related to credit losses.

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Before tax amount of other than temporary impairment (OTTI) on a debt security, categorized as available-for-sale, recognized in other comprehensive income (loss).

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