Convertible Note and Derivative Liability (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014	Jul. 31, 2012 item	Jul. 31, 2014
Convertible Note And Derivative Liability [Line Items]
Aggregate cash consideration received					$ 1,200,000
Number of lenders					9
Decrease in derivative liability	5,000	(1,000)	4,000	(59,000)
Common stock, shares issued	40,120,965		40,120,965			29,394,940
Warrants liability	5,000		5,000			9,000
Notes [Member]
Convertible Note And Derivative Liability [Line Items]
Unsecured note principal amount					1,333,000	1,125,000
Bridge Loan [Member] | Warrant [Member]
Convertible Note And Derivative Liability [Line Items]
Shares issued					132,420
Aggregate number of exercises			90,699	90,699
Common stock, shares issued	73,290	73,290	73,290	73,290
Warrants outstanding	9,709		9,709
Change in fair value of derivative liability	$ (5,000)		$ (4,000)