Note 12 - Contingent Liabilities and Commitments (Details) (USD $)	1 Months Ended
	Apr. 30, 2012	Jul. 31, 2011 sqft	Apr. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Area of Real Estate Property (in Square Feet)		10,870
Lease Term		66 months
Number of Months in Which Free Rent is Provided		6 months
Payments for Rent	$ 23,000
Letter of Credit Required by Lease, Face Amount		250,000
Reduction Amount on Letter of Credit Required by Lease		50,000	50,000
Lette of Credit Amount Remaining Until Lease Term Expires		100,000
Reduction of Escrow Deposit			$ 50,000