Net Income Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income (loss)	$ 1,243,912	$ 1,259,858	$ 438,105	$ 327,908	$ 997,117	$ 511,259	$ 202,499	$ 139,421	$ 3,269,783	$ 1,850,296	$ (3,653,905)
Denominator:
Basic weighted average shares									16,939,302	16,867,550	16,805,991
Dilutive effect of share-based awards									174,889	74,897
Diluted weighted average shares									17,114,191	16,942,447	16,805,991
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.07	$ 0.07	$ 0.03	$ 0.02	$ 0.06	$ 0.03	$ 0.01	$ 0.01	$ 0.19	$ 0.11	$ (0.22)
Diluted (in dollars per share)	$ 0.07	$ 0.07	$ 0.03	$ 0.02	$ 0.06	$ 0.03	$ 0.01	$ 0.01	$ 0.19	$ 0.11	$ (0.22)
Options to purchase common stock outstanding (in shares)	104,500				550,834				104,500	550,834	550,834
Anti-dilutive options to purchase common stock excluded from the computation of diluted earnings per share (in shares)									100,000	0
RSU
Net income (loss) per common share:
Restricted stock units outstanding ( in shares)	0				0				0	0	0