Liquidity & Going Concern Uncertainty (Narrative) (Details) (USD $)	Apr. 30, 2013	Jul. 31, 2012	Apr. 30, 2012	Jul. 31, 2011
Liquidity & Going Concern Uncertainty [Abstract]
Accumulated deficit	$ (68,012,000)	$ (62,500,000)
Cash and Cash Equivalents, at Carrying Value	410,000	877,000	289,000	1,794,000
Liabilities, Current	1,539,000	3,637,000
Accounts Payable, Current	$ 848,000	$ 1,946,000

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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