Common stock increase in capital shares reserved for future issuance in period shares.

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Exercise price as percentage of fair value of common stock.

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Share-Based Compensation Arrangement By Share-based Payment Award, Purchase Period

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Stock Issued During Period, Employee Stock Ownership Plan, Purchase Price

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Price of a single share of a number of saleable stocks of a company.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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Stock-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended					3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019	Feb. 28, 2010	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increase in number of shares reserved (in shares)	4,000,000	2,200,000	1,300,000
Stock price (in dollars per share)						$ 8.23		$ 8.23
Total unrecognized stock-based compensation expense related to stock options granted						$ 13,100		$ 13,100
Shares reserved for issuance (in shares)						213,000,000		213,000,000
Stock-based compensation expense						$ 1,486	$ 1,401	$ 4,159	$ 3,774
2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock available for future issuance (in shares)						4,164,254		4,164,254
2019 Equity Incentive Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share of common stock authorized (in shares)						8,500,000		8,500,000
Common stock reserved for issuance (in shares)						1,068,901		1,068,901
Employee Stock Purchase Plan, 2010
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock available for future issuance (in shares)						0		0
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards, vesting period				4 years
Awards, expiration period				10 years
Weighted-average grant date fair value of stock options granted (in dollars per share)								$ 3.08	$ 6.76
Total unrecognized stock-based compensation expense, weighted-average period Recognition								2 years 10 months 13 days
Stock Options \| Minimum \| Participants Who Own Less Than Ten Percent Of Combined Voting Power
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price of incentive stock options as percentage of fair market value of common stock on the date of the award				100.00%
Stock Options \| Maximum \| Participants Who Own More than 10% of Total Combined Voting Power
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price of incentive stock options as percentage of fair market value of common stock on the date of the award				110.00%
Employee Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increase in number of shares reserved (in shares)	300,000	500,000
Share of common stock authorized (in shares)	876,400	576,400
Purchase price of common stock, percentage					85.00%			85.00%
Purchase period					6 months
Shares reserved for issuance (in shares)						575,834		575,834
ESPP shares sold (in shares)								136,569	13,220
ESPP, shares sold, price per share (in dollars per share)								$ 3.39	$ 4.38
Stock-based compensation expense						$ 100		$ 300