| 
           Note 17 - Incentive and Non-Statutory Stock Option Plan (Detail) (USD $) 
         | 
        3 Months Ended | 6 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
           Dec. 31, 2012 
         | 
        
           Sep. 30, 2011 
         | 
        
           Dec. 31, 2012 
         | 
        
           Dec. 31, 2011 
         | 
        
           Sep. 30, 2012
 
          Options [Member]
 
          Option A [Member] 
         | 
        
           Sep. 30, 2012
 
          Options [Member]
 
          Option B [Member] 
         | 
        
           Sep. 30, 2012
 
          Options [Member]
 
          Option C [Member] 
         | 
        
           Dec. 31, 2012
 
          Options [Member]
 
          Option D [Member] 
         | 
        
           Dec. 31, 2012
 
          Options [Member]
 
          Option E [Member] 
         | 
        
           Dec. 31, 2012
 
          Stock Options [Member]
 
          Option D [Member] 
         | 
        
           Sep. 30, 2012
 
          Stock Options [Member]
 
          Maximum [Member] 
         | 
        
           Jun. 30, 2012
 
          Stock Options [Member]
 
          Maximum [Member] 
         | 
        
           Sep. 30, 2012
 
          Stock Options [Member]
 
          Minimum [Member] 
         | 
        
           Jun. 30, 2012
 
          Stock Options [Member]
 
          Minimum [Member] 
         | 
        
           May 30, 2011
 
          Stock Options [Member] 
         | 
        
           Sep. 30, 2012
 
          Stock Options [Member] 
         | 
        
           Jun. 30, 2012
 
          Stock Options [Member] 
         | 
        
           Sep. 13, 2012
 
          Adjusted From [Member]
 
          Maximum [Member] 
         | 
        
           Sep. 13, 2012
 
          Adjusted To [Member]
 
          Minimum [Member] 
         | 
        
           May 30, 2011
 
          Equity Incentive Plan [Member] 
         | 
        
           Sep. 30, 2011
 
          Warrant [Member]
 
          Maximum [Member] 
         | 
        
           Sep. 30, 2011
 
          Warrant [Member]
 
          Minimum [Member] 
         | 
        
           Sep. 13, 2012
 
          Warrant [Member]
 
          Increased From [Member] 
         | 
        
           Sep. 13, 2012
 
          Warrant [Member]
 
          Increased To [Member] 
         | 
        
           Sep. 30, 2011
 
          Warrant [Member] 
         | 
        
           Sep. 13, 2012
 
          Maximum [Member] 
         | 
        
           Sep. 13, 2012
 
          Minimum [Member] 
         | 
      |
| Percentage of Shares Exercisable Annually | 20.00% | ||||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 140,845 | 28,572 | 16,350 | 50,000 | 20,000 | 70,000 | 184,922 | 351,259 | |||||||||||||||||||
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | $ 5 | $ 3.50 | $ 4.00 | $ 4.75 | $ 4.75 | $ 5.00 | $ 5.00 | $ 7.50 | $ 3.50 | $ 3.00 | |||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 month | 1 month | 1 month | 3 months | |||||||||||||||||||||||
| Share-based Compensation (in Dollars) | $ 6,850 | $ 6,000 | $ 20,036 | $ 4,209 | $ 55,040 | $ 73,478 | $ 16,860 | ||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 0.07% | 0.08% | 0.10% | 0.11% | 0.11% | ||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 1 month | 1 month | 1 month | 3 months | 3 months | ||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 27.27% | 28.43% | 26.58% | 32.23% | 32.23% | ||||||||||||||||||||||
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) | 7.73 | 7.46 | 8.95 | 7.73 | 8.95 | 7.73 | 4.93 | ||||||||||||||||||||
| Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants (in Dollars) | 446,480 | ||||||||||||||||||||||||||
| Deferred Costs (in Dollars) | $ 401,648 | ||||||||||||||||||||||||||
| Class of Warrant or Right, Outstanding (in Shares) | 163,021 | ||||||||||||||||||||||||||
| Class of Warrant or Right, Right To Exercise Percentage | 5.00% | ||||||||||||||||||||||||||
| Class of Warrant or Right, Excess Exercise Price Percentage | 125.00% | ||||||||||||||||||||||||||
| Stock Issued During Period, Shares, Period Increase (Decrease) (in Shares) | 163,021 | 168,943 | |||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) | 500,000 | ||||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Maximum (in Shares) | 50,000 | ||||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | 10 years | ||||||||||||||||||||||||||
| Participant Percentage of Stock Owned | 10.00% | ||||||||||||||||||||||||||
| Percent Shareholder | 10.00% | ||||||||||||||||||||||||||
| Percent of Exercise Price Above Fair Market Value Per Share of Common Stock | 110.00% | ||||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in Shares) | 16,950 | 2,500 | |||||||||||||||||||||||||