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Earnings Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income	$ 19,220	$ 226,797	$ 4,754,673	$ 1,589,672
Denominator:
Basic weighted average shares	16,755,082	16,941,707	16,735,533	16,925,688
Dilutive effect of share-based awards	115,322	117,839	111,772	101,528
Diluted weighted average shares	16,870,404	17,059,546	16,847,305	17,027,216
Earnings per common share:
Basic EPS (in dollars per share)	$ 0.00	$ 0.01	$ 0.28	$ 0.09
Diluted EPS (in dollars per share)	$ 0.00	$ 0.01	$ 0.28	$ 0.09
Options to purchase common stock outstanding (in shares)	586,834	590,168	586,834	590,168
Weighted dilutive shares outstanding excluded from the computation of diluted earnings per share (in shares)	336,834	340,586	337,003	359,571

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