Effective Tax Rate (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Income tax expense
Current	$ 873,815	$ 448,274	$ 597,879	$ 210,843
Deferred	(33,027)	203,792	381,501	819,822
Total	840,788	652,066	979,380	1,030,665
Expected federal tax expense			968,907	969,553
State tax expense (net of federal)			202,331	202,465
Net operating loss carryforwards				67,961
Other, net			(191,858)	(209,314)
Actual tax expense			$ 138,593	$ 378,599