Note 4 - Credit Facilities (Detail) (USD $)	3 Months Ended		1 Months Ended	0 Months Ended	1 Months Ended			1 Months Ended
	Mar. 31, 2013	Jul. 31, 2012	Jan. 31, 2013 Subsequent Event [Member] Third Sterling Amendment [Member]	Jul. 06, 2010 Sterling Credit Facility [Member]	Jul. 31, 2012 Sterling Credit Facility [Member]	Jul. 06, 2010 Cornerstone Bank [Member]	Oct. 31, 2011 Oxford Funding Pty Ltd [Member]	Oct. 31, 2011 Royal Bank of Canada [Member]	Oct. 20, 2006 Royal Bank of Canada [Member]	Mar. 07, 2011 Mizuho Bank [Member}
Line of Credit Facility, Maximum Borrowing Capacity		$ 6,500,000		$ 5,000,000		$ 1,500,000	$ 1,300,000		$ 737,000
Line of Credit Facility, Interest Rate Description			Prime Rate (as that term is defined in the Loan Agreement) plus one quarter of one percent (1/4%) per annum		prime plus three quarters of one percent (3/4%) per annum
Line of Credit Facility, Borrowing Capacity, Description				principally 85% of "eligible" domestic accounts receivable less certain reserves				principally 80% of eligible accounts receivable less certain deductions	principally 75% of eligible accounts receivable less certain deductions
Debt Instrument, Face Amount										212,000
Debt Instrument, Periodic Payment	2,500
Debt Instrument, Interest Rate, Stated Percentage	0.10%
Loans Payable	$ 149,000