Promissory Note (Narrative II) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013	Jul. 31, 2013
Class of Warrant or Right [Line Items]
Number of warrants to purchase common stock	250,000		250,000
Troubled debt restructuring loss			$ 0	$ 25,000	$ 25,000
Interest Paid					174,000
Gain on extinguishment of debt	(727,000)	0	(727,000)	0
Amount paid under terms of the note			28,000
Morrison And Foerster L.L.P. [Member]
Class of Warrant or Right [Line Items]
Number of warrants to purchase common stock					375,000
Exercise price of warrants					$ 0.83
Fair value of warrants		245,000		245,000	245,000
Volatility rate					134.00%
Risk-free interest rate					0.35%
Expected life					5 years
Repayment of unsecured debt			500,000
Extinguishment of unsecured debt			$ 1,227,000