Stock Compensation Plan (Details 3) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Summary of the status of nonvested restricted stock awards
Non-vested, Dividend Reinvested Shares	1,503,904	2,478,735	2,253,074
Restricted Stock Units (RSUs) [Member]
Summary of the status of nonvested restricted stock awards
Non-vested, Shares, Beginning balance	126,262	69,355	0
Non-vested, Shares, Granted	67,800	75,400	67,900
Non-vested, Dividend Reinvested Shares	7,654	5,021	1,455
Non-vested, Shares, Vested	(45,615)	(12,427)	0
Non-vested, Shares, Forfieted	(5,419)	(11,087)	0
Non-vested, Shares, Ending balance	150,682	126,262	69,355
Non-vested, Weighted average grant date fair value, Beginning balance	8.29	7.85
Non-vested, Weighted average grant date fair value, Granted	11.51	8.59	7.85
Dividend Reinvested Shares, Weighted verage grant date fair value	9.84	7.82	7.00
Non-vested, Weighted average grant date fair value, Vested	(10.62)	(7.85)	0
Non-vested, Weighted average grant date fair value, Forfieted	(7.85)	(7.85)	0
Non-vested, Weighted average grant date fair value, Endng balance	9.11	8.29	7.85