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Stock-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2021

Share-Based Payment Arrangement [Abstract]

Schedule of stock-based compensation expense

		2021				2020
Selling, general and administrative		$	1,550,841			$	1,623,629
Research and development			242,358				212,341
Total stock-based compensation expense		$	1,793,199			$	1,835,970

Schedule of weighted-average assumptions used in the Black-Scholes option-pricing model

		Number of Options				Weighted Average Exercise Price				Weighted- Average Remaining Contractual Term (years)				Aggregate Intrinsic Value(1)
Outstanding at September 30, 2019			281,956			$	5.46				9.0			$	343,406
Granted			334,731			$	6.18				—				—
Exercised			(25,515	)		$	0.12				—				—
Forfeited/Cancelled			(98,330	)		$	5.91				—				—
Outstanding at September 30, 2020			492,842			$	6.13				8.8			$	96,088
Granted			703,117			$	5.83				—				—
Exercised			(1,538	)		$	6.60				—				—
Forfeited/Cancelled			(71,861	)		$	6.85				—				—
Outstanding at September 30, 2021			1,122,560			$	5.89				8.8			$	127,339
Vested and exercisable at September 30, 2021			481,047			$	5.89				8.2			$	311,388

Schedule of weighted-average assumptions used in the Black-Scholes option-pricing model

		2021				2020
Expected stock price volatility			55.9	%			53.1	%
Expected life of options (years)			6.0				5.6
Expected dividend yield			0	%			0	%
Risk free interest rate			0.6	%			1.4	%

Schedule of restricted stock unit activity

		Number of
		Shares
Non-vested at September 30, 2019			10,503
Granted			78,323
Forfeited			(2,335	)
Vested			(59,793	)
Non-vested at September 30, 2020			26,698
Granted			13,776
Vested			(29,090	)
Non-vested at September 30, 2021			11,384

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Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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