Share-based Compensation (Tables)

9 Months Ended

Jun. 30, 2021

Share-based Compensation [Abstract]

Recorded Share-Based Compensation Expenses

	Three Months Ended				Nine Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Cost of sales	$	15,921	$	7,743	$	50,548	$	38,713
Selling, general and administrative		1,444,145		490,647		2,719,232		1,442,970
Research and development		440,019		186,924		917,883		499,809
Share-based compensation	$	1,900,085	$	685,314	$	3,687,663	$	1,981,492

Weighted Average Assumptions for Options Granted

	Three Months Ended				Nine Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Weighted Average Assumptions:
Expected volatility		78.53%		—		68.88%		63.13%
Expected dividend yield		0.00%		—		0.00%		0.00%
Risk-free interest rate		1.10%		—		0.64%		1.63%
Expected term (in years)		6.0		—		5.9		5.9
Fair value of options granted	$	5.98	$	—	$	3.46	$	1.14

Summary of Stock Options Outstanding and Exercisable

		Weighted Average
				Remaining	Aggregate
	Number of	Exercise Price		Contractual Term	Intrinsic
	Shares	Per Share		(years)	Value
Outstanding at September 30, 2020	8,599,000	$	1.67
Granted	3,228,625	$	5.47
Exercised	(996,102)	$	1.54
Forfeited and expired	(91,269)	$	1.74
Outstanding at June 30, 2021	10,740,254	$	2.83	7.91	$	60,768,816
Exercisable at June 30, 2021	5,933,601	$	1.66	7.01	$	38,057,411