Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013	Jul. 31, 2013	Jul. 31, 2012
Equity (Textual) [Abstract]
Beginning balance			$ 13,855
Stock-based compensation			498	1,226
Net loss	(868)	(417)	(1,285)	(1,888)
Ending Balance	13,068		13,068		13,855
Equity [Member]
Equity (Textual) [Abstract]
Beginning balance			14,229
Stock-based compensation			498
Net loss			(1,118)
Ending Balance	13,609		13,609
Noncontrolling Interest [Member]
Equity (Textual) [Abstract]
Beginning balance			(374)
Stock-based compensation
Net loss			(167)
Ending Balance	$ (541)		$ (541)