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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Stock-Based Compensation Plans - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended			9 Months Ended			17 Months Ended	21 Months Ended
	Apr. 25, 2021	Jul. 31, 2019	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2022	Sep. 30, 2021	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			$ 17,600,000			$ 17,600,000			$ 17,600,000
Period over which compensation cost will be recognized (in years)						2 years 10 months 28 days
2021 Employee stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual contributions per employee (as a percent)	15.00%
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)			24,612			24,612			37,370
Share-based compensation expense			$ 21,000	$ 18,000		$ 74,000	$ 18,000
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	5 years 11 months 12 days
Expected dividend yield (as percent)						0.00%	0.00%
Options granted in period, weighted-average grant date fair value (in USD per share)						$ 6.94	$ 11.14
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 \| 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 \| 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, Evergreen Provision
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized, percent		4.00%
Additional shares authorized (in shares)		4,900,000								2,481,195
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
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