Annual report pursuant to Section 13 and 15(d)

Note 8 - Shareholders' Equity (Detail)

v2.4.0.6
Note 8 - Shareholders' Equity (Detail) (USD $)
1 Months Ended 12 Months Ended
Jan. 31, 2012
Jan. 31, 2011
Jan. 31, 2010
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2010
Sep. 29, 2010
Apr. 30, 2004
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)       $ 1.00        
Preferred Stock, Redemption Price Per Share (in Dollars per share)       $ 1.00        
Preferred Stock, Dividend Payment Terms       $36,026,232        
Dividends, Preferred Stock (in Dollars)       $ 432,513        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)               1,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)       1,350,811        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in Shares)       29,500        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period (in Shares)       48,000        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year 12500 years            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)       12,500        
Share Based Compensation Expiration 10 years              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value (in Dollars) 15,400     66,000 74,700 79,700    
Fair Value Assumptions, Exercise Price (in Dollars per share) $ 1.85 $ 3.67 $ 2.88          
Fair Value Assumptions, Expected Term 10 years 10 years 10 years          
Fair Value Assumptions, Expected Dividend Rate 0.00% 0.00% 0.00%          
Fair Value Assumptions, Risk Free Interest Rate 1.87% 3.37% 3.74%          
Fair Value Assumptions, Expected Volatility Rate 73.20% 84.70% 88.40%          
Fair Value Expected Foreiture Rate 0.00% 0.00% 0.00%          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) $ 15,400 $ 54,500 $ 31,200 $ 1.23 $ 3.11 $ 2.49    
Share Price (in Dollars per share)     $ 2.49 $ 2.35     $ 3.00  
Allocated Share-based Compensation Expense (in Dollars)       54,600 94,600 87,600    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)       92        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)       1.80        
Number Of Shares       1,500,000        
Proceeds from Sale of Equity Method Investments (in Dollars)       3,500,000        
Proceeds From Equity Method Investments Per Share (in Dollars per share)       $ 2.35        
Arkansas River Agreement [Member]
               
Number Of Shares       750,000        
Minimum [Member]
               
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       8 years        
Maximum [Member]
               
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       10 years        
NonEmployee Director [Member]
               
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) 12,500 17,500 12,500          
Unrecognized [Member]
               
Allocated Share-based Compensation Expense (in Dollars)       $ 13,200