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Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net loss	$ (1,316,871)	$ 5,930,425	$ (2,198,490)	$ 4,735,453
Denominator:
Basic weighted average shares	16,800,244	16,735,503	16,791,687	16,725,759
Dilutive effect of share-based awards		111,556		109,997
Diluted weighted average shares	16,800,244	16,847,059	16,791,687	16,835,756
Earnings per common share:
Basic EPS (in dollars per share)	$ (0.08)	$ 0.35	$ (0.13)	$ 0.28
Diluted EPS (in dollars per share)	$ (0.08)	$ 0.35	$ (0.13)	$ 0.28
Options to purchase common stock outstanding (in shares)	556,834	586,834	556,834	586,834
Diluted weighted-average shares outstanding excluded from computation of diluted EPS (in shares)	574,167	336,834	580,501	337,090
Other income	$ 15,664	$ 4,140,210	$ 37,096	$ 4,159,326

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