Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jul. 31, 2015	Jul. 31, 2014
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	41,859,297	29,394,940
Common stock, shares outstanding	41,859,297	29,394,940