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MBS And Other Investments: Narrative-Realized Gains (Losses) (Details) (USD $)
 3 Months Ended 9 Months Ended
Jun. 30, 2014
security
Jun. 30, 2013
security
Jun. 30, 2014
security
Jun. 30, 2013
security
Sep. 30, 2013
Investments [Abstract]          
Marketable Securities, Gain (Loss) $ 0        
Gain on sale of securities   0 0 20,000  
Loss on sale of securities 40,000 188,000 32,000 571,000  
Held-to-maturity securities, realized loss, number of securities 12 12 15 17  
Held-to-maturity Securities, Sold Security, Realized Gain (Loss)     445,000    
Available-for-sale securities, realized loss, number of securities     6 6  
Security owned and pledged as collateral $ 6,390,000   $ 6,390,000   $ 4,540,000