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Stock-Based Compensation Plans - Additional Information (Details) - USD ($)				1 Months Ended		3 Months Ended			9 Months Ended			45 Months Ended
	Jun. 28, 2023	Aug. 01, 2021	Apr. 25, 2021	Sep. 30, 2023	Jul. 31, 2019	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2023	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield (as percent)									0.00%
Total unrecognized compensation expense				$ 12,700,000		$ 12,700,000			$ 12,700,000			$ 12,700,000
Period over which compensation cost will be recognized, in years									2 years 10 months 24 days
2021 Employee stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of the stock, at discount from market price at purchase date (as a percent)			85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			200,000
RSUs granted (in shares)		167,642
Share-based compensation expense						$ 19,000	$ 21,000		$ 102,000	$ 74,000
Maximum annual contributions per employee (as a percent)			15.00%
2021 Employee stock Purchase Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)				1,000,000
2019 Omnibus Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant					1,500,000
Expected term of options (years)									6 years 3 days	6 years
Expected dividend yield (as percent)									0.00%	0.00%
Options granted in period, weighted-average grant date fair value (in USD per share)									$ 1.32	$ 6.94
2019 Omnibus Equity Incentive Plan | Incentive stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)									4 years
2019 Omnibus Equity Incentive Plan | Minimum | Non-statutory options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)									3 years
2019 Omnibus Equity Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term of options (years)									10 years
2019 Omnibus Equity Incentive Plan | Maximum | Non-statutory options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)									4 years
2019 Omnibus Equity Incentive Plan, Evergreen Provision
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (as a percent)					4.00%
Additional shares authorized (in shares)					4,900,000							4,408,871
Increase in other share (in shares)	4,440,000
2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				43,311		43,311			43,311			43,311
2017 Inducement Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant													46,250
Share-based compensation expense							$ 0	$ 0		$ 0	$ 0

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