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Earnings Per Share (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Numerator:        
Net income (loss) $ 1,578,313 $ (364,091) $ 1,362,875 $ 229,651
Denominator:        
Basic weighted average shares 16,925,719 16,925,028 16,917,679 16,940,377
Dilutive effect of share-based awards (in shares) 92,442   91,620 103,358
Diluted weighted average shares 17,018,161 16,925,028 17,009,299 17,043,735
Earnings per common share:        
Basic EPS (in dollars per share) $ 0.09 $ (0.02) $ 0.08 $ 0.01
Diluted EPS (in dollars per share) $ 0.09 $ (0.02) $ 0.08 $ 0.01
Options to purchase common stock outstanding (in shares) 591,168 671,168 591,168 671,168
Weighted dilutive shares outstanding excluded from the computation of diluted earnings per share 343,585 671,168 369,333 402,774