Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Equity (Textual) [Abstract]
Beginning balance	$ 13,855
Stock-based compensation	156	1,230
Net loss	(417)	(1,471)
Ending Balance	13,594		13,855
Equity [Member]
Equity (Textual) [Abstract]
Beginning balance	14,229
Stock-based compensation	156
Net loss	(391)
Ending Balance	13,994
Noncontrolling Interest [Member]
Equity (Textual) [Abstract]
Beginning balance	(374)
Stock-based compensation
Net loss	(26)
Ending Balance	$ (400)