MBS And Other Investments: Narrative-Realized Gains (Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2013 security	Sep. 30, 2012	Sep. 30, 2013 security	Sep. 30, 2012 security	Sep. 30, 2011 security
Schedule of Available-for-sale Securities [Line Items]
Gain on sale of securities		$ 22	$ 0		$ 79
Loss on sale of securities	671		872	1,813
Held-to-maturity securities, realized loss, number of securities	18		25	28
Available-for-sale securities, realized loss, number of securities	5		5	1	2
Security owned and pledged as collateral	4,537	5,699	4,537	5,699
Previously Recognized as a Credit Loss
Schedule of Available-for-sale Securities [Line Items]
Loss on sale of securities				$ 1,811