Securities Available for Sale - Changes in Accumulated Other Comprehensive Income by Component (Details) (USD $)	3 Months Ended	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Unrealized Gains/(Losses) on Available-for-Sale Securities [Roll Forward]
Beginning balance	$ (22,874)	$ (2,461,351)	$ (754,135)	$ (1,839,593)
Other comprehensive income before reclassifications	571,319	671,535	1,303,000	49,777
Amounts reclassified from accumulated other comprehensive income (loss) to loss on investment securities available for sale	17,126	0	16,706	0
Net current-period other comprehensive income	588,445	671,535	1,319,706	49,777
Ending balance	$ 565,571	$ (1,789,816)	$ 565,571	$ (1,789,816)

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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