Condensed Consolidated Balance Sheets (Parentheticals) (USD $)	Jul. 31, 2012	Jul. 31, 2011
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	21,592,450	12,455,380
Treasury shares, shares	2	2
Series A Cumulative Preferred Stock Member
Preferred stock, dividend rate	4.00%	4.00%
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	155,000	155,000
Preferred stock, shares outstanding	155,000	155,000
Preferred stock, par value (in Dollars per share)	$ 0.50	$ 0.50
Series B Cumulative Preferred Stock Member
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	1,197	1,197
Preferred stock, shares outstanding	1,197	1,197
Preferred stock, par value (in Dollars per share)	$ 0.50	$ 0.50
Preferred stock, dividend rate (in Dollars)	$ 0.90	$ 0.90