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Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balances (in shares) at Sep. 30, 2015 32,898,461        
Balances at Sep. 30, 2015 $ 329 $ 87,608,034 $ (49,658,850) $ (301) $ 37,949,212
Share-based compensation expense 605,426 $ 605,426
Issuance of common stock upon exercise of stock options, net (in shares) 1,250       1,250
Issuance of common stock upon exercise of stock options, net 2,200 $ 2,200
Repurchase of common stock (in shares) (1,099,608)        
Repurchase of common stock $ (11) (1,748,445) (1,748,456)
Common stock cash dividends (954,650) (954,650)
Other comprehensive loss (1,248) (1,248)
Net loss (1,281,599) (1,281,599)
Balances (in shares) at Sep. 30, 2016 31,800,103        
Balances at Sep. 30, 2016 $ 318 86,467,215 (51,895,099) (1,549) 34,570,885
Share-based compensation expense 1,116,400 $ 1,116,400
Issuance of common stock upon exercise of stock options, net (in shares) 233,333       233,333
Issuance of common stock upon exercise of stock options, net $ 3 373,224 $ 373,227
Other comprehensive loss 280 280
Net loss (876,754) (876,754)
Issuance of common stock upon vesting of restricted stock units (in shares) 125,000        
Issuance of common stock upon vesting of restricted stock units $ 1 1
Balances (in shares) at Sep. 30, 2017 32,158,436        
Balances at Sep. 30, 2017 $ 322 $ 87,956,839 $ (52,771,853) $ (1,269) $ 35,184,039