Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Sep. 30, 2013
Accumulated amortization of financing costs	$ 3,230,658	$ 3,061,640
Accumulated amortization of lease costs	1,535,988	1,414,861
Accumulated amortization of intangible assets	$ 8,681,271	$ 8,333,680
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	67,700,000	67,700,000
Common Stock, shares issued	46,134,827	44,488,509
Common Stock, shares outstanding	46,134,827	44,488,509
Excess Stock, par value	$ 0.01	$ 0.01
Excess stock , shares authorized	5,000,000	5,000,000
Excess Stock , shares issued
Excess Stock , shares outstanding
Series A Cumulative Redeemable Preferred Stock
Cumulative redeemable preferred, stock dividend rate	7.625%	7.625%
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,139,750	2,139,750
Preferred stock, shares issued	2,139,750	2,139,750
Preferred stock, shares outstanding	2,139,750	2,139,750
Series B Cumulative Redeemable Preferred Stock
Cumulative redeemable preferred, stock dividend rate	7.875%	7.875%
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,300,000	2,300,000
Preferred stock, shares issued	2,300,000	2,300,000
Preferred stock, shares outstanding	2,300,000	2,300,000