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Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings, Appropriated [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Sep. 30, 2016 31,800,103        
Balance 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
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
Other comprehensive loss 280 280
Net loss (876,754) (876,754)
Balance (in shares) at Sep. 30, 2017 32,158,436        
Balance at Sep. 30, 2017 $ 322 87,956,839 (52,771,853) (1,269) 35,184,039
Share-based compensation expense 584,873 $ 584,873
Issuance of common stock upon exercise of stock options, net (in shares) 1,179,456       1,179,456
Issuance of common stock upon exercise of stock options, net $ 12 2,434,875 $ 2,434,887
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
Other comprehensive loss (244,106) (244,106)
Net loss (3,745,042) (3,745,042)
Stock buyback (in shares) (286,746)        
Stock buyback $ (3) (725,442) (725,445)
Balance (in shares) at Sep. 30, 2018 33,176,146        
Balance at Sep. 30, 2018 $ 332 $ 90,251,145 $ (56,516,895) $ (245,375) $ 33,489,207