Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2016	Jul. 31, 2015
Accounts receivable, trade, allowance for doubtful accounts	$ 163	$ 57
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares Authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares Authorized	1,400,000,000	1,400,000,000
Common stock, shares issued	52,553,762	52,233,888
Common stock, shares outstanding	52,553,762	52,233,888