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Note 11 - Stockholders' Equity - Summary of Changes in Stockholders' Equity (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Balances     $ 34,570,885  
Share-based compensation expense     943,923  
Other comprehensive loss $ 107 $ 781 (1,871) $ 252
Net loss (528,163) $ 276,922 (1,042,492) $ (767,814)
Balances $ 34,470,445   $ 34,470,445  
Common Stock [Member]        
Balances (in shares)     31,800,103  
Balances     $ 318  
Shares issued pursuant to stock awards (in shares)     125,000  
Shares issued pursuant to stock awards     $ 1  
Balances (in shares) 31,925,103   31,925,103  
Balances $ 319   $ 319  
Additional Paid-in Capital [Member]        
Balances     86,467,215  
Share-based compensation expense     943,923  
Shares issued pursuant to stock awards     (1)  
Balances 87,411,137   87,411,137  
Retained Earnings [Member]        
Balances     (51,895,099)  
Net loss     (1,042,492)  
Balances (52,937,591)   (52,937,591)  
AOCI Attributable to Parent [Member]        
Balances     (1,549)  
Other comprehensive loss     (1,871)  
Balances $ (3,420)   $ (3,420)