Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014 Equity [Member]	Jan. 31, 2014 Equity [Member]	Apr. 30, 2014 Noncontrolling Interest [Member]	Jan. 31, 2014 Noncontrolling Interest [Member]
Equity (Textual) [Abstract]
Beginning balance			$ 13,855		$ 14,229	$ 13,994	$ (374)	$ (400)
Stock-based compensation			628	1,226	628
Net loss	121	(880)	(1,163)	(2,768)	(1,000)		(163)
Ending Balance	$ 13,320		$ 13,320		$ 13,857	$ 13,994	$ (537)	$ (400)