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Note 14 - Subsequent Events (Details Textual) - USD ($)
3 Months Ended
Dec. 06, 2015
Nov. 04, 2015
Oct. 31, 2015
Nov. 03, 2015
Subsequent Event [Member] | Bretelon, Inc. [Member]        
Business Combination, Consideration Transferred $ 22,719,000 $ 22,700,000    
Subsequent Event [Member] | Bretelon, Inc. [Member] | Short-term Notes [Member] | Issued on August 28, 2015 [Member]        
Debt Instrument, Face Amount       $ 1,500,000
Subsequent Event [Member] | Bretelon, Inc. [Member] | Short-term Notes [Member] | Issued on September 14, 2015 [Member]        
Debt Instrument, Face Amount       1,000,000
Subsequent Event [Member] | Bretelon, Inc. [Member] | Short-term Notes [Member] | Issued on October 5, 2015 [Member]        
Debt Instrument, Face Amount       200,000
Subsequent Event [Member] | Bretelon, Inc. [Member] | Short-term Notes [Member]        
Debt Instrument, Face Amount       $ 2,700,000
Debt Instrument, Interest Rate, Stated Percentage       3.00%
Subsequent Event [Member] | Transferred for Divestiture of Shares Held in Business Acquisition [Member] | Chief Executive Officer [Member] | Bretelon, Inc. [Member]        
Business Combination, Consideration Transferred   97,500    
Subsequent Event [Member] | Director [Member] | Bretelon, Inc. [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number       700,000
Business Combination, Options Converted into Rights to Receive Cash, Amount   $ 215,000    
Subsequent Event [Member] | Chief Executive Officer [Member] | Bretelon, Inc. [Member]        
Investment Owned, Balance, Shares       1,710,526
Investment Owned, Percent of Outstanding Shares       0.039%
Bretelon, Inc. [Member]        
Business Combination, Acquisition Related Costs     $ 300,000