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Note 5 - Collaborative Agreements (Detail) (USD $)
3 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended
May 27, 2013
Scenario, Forecast [Member]
Nitta [Member]
Dec. 01, 2006
Monsanto [Member]
Feb. 26, 2012
Monsanto [Member]
Jun. 24, 2012
INCOTEC [Member]
Mar. 31, 2006
Air Products [Member]
Jun. 30, 2010
Windset [Member]
Apio [Member]
Feb. 24, 2013
Nitta [Member]
Feb. 24, 2013
Nitta [Member]
License Agreement Term   5 years   7 years        
Termination Fee   $ 4,000,000            
Licenses Revenue     2,700,000          
Royalty Percentage       20.00%        
License Agreement Profit Percentage         40.00%      
Development Fee           100,000    
Annual License Fee Percentage           3.00%    
Annual Minimum License Fees           150,000    
Research and Development Arrangement, Contract to Perform for Others, Compensation Earned $ 275,000           $ 275,000 $ 413,000