Business Acquisition, Earnout Period

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- Definition

Business Combination, Contingent Consideration, Equity Interest Issued or Issuable, Number of Shares

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Preferred Stock, Number Of Rights Expired, Redeemed Or Exchanged

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Section 382 Rights Agreement, Acquiring Person, Trigger, Percentage of Common Shares Outstanding

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No definition available.

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

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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Aggregate number of common shares reserved for future issuance.

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The per share price that the individual must pay to acquire shares under the deferred compensation arrangement.

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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 nonvested award under share-based payment arrangement. Excludes share and unit options.

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

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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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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No definition available.

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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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No definition available.

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Number of shares issued under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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Amount of stock repurchase plan authorized.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stockholders' Equity - Narrative (Details)			2 Months Ended	12 Months Ended
Stockholders' Equity - Narrative (Details)	May 28, 2021 USD ($) shares	Nov. 06, 2018 $ / shares shares	Dec. 10, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Oct. 22, 2021 shares	Jun. 15, 2021 USD ($)	Jan. 31, 2020 shares	Dec. 13, 2019 USD ($)	Feb. 28, 2019	Oct. 23, 2018 $ / right $ / shares shares	Sep. 30, 2018 shares	Mar. 07, 2018 shares	Mar. 10, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)				0	92,610	409,368
Unrecognized compensation expense related to options outstanding \| $				$ 19,600,000
Weighted average period for unrecognized compensation expense expected to be recognized				2 years 2 months 12 days
Options to purchase common stock outstanding (in shares)				816,717	1,162,505	1,686,902							2,806,364
Recognized compensation expense \| $				$ 11,532,000	$ 9,551,000	$ 9,637,000
Total intrinsic value of options exercised \| $				2,700,000	$ 2,500,000	$ 11,100,000
Weighted average fair value of options granted (in dollars per share) \| $ / shares					$ 4.32	$ 5.07
Aggregate intrinsic value of options \| $				9,000,000	$ 6,100,000
Acquisition-related costs and expenses \| $				8,951,000	6,575,000	$ 7,563,000
Amount authorized under share repurchase program \| $								$ 15,000,000		$ 10,000,000
Amount of shares repurchased \| $				$ 200,000	$ 1,000,000
Number of shares repurchased (in shares)				10,555	137,000
Average price of shares repurchased (in dollars per share) \| $ / shares				$ 17.99	$ 7.33
Amount of shares repurchased and retired \| $				$ 190,000	$ 1,002,000
Preferred stock, par value per share (in dollars per share) \| $ / shares				$ 0.001	$ 0.001
Percentage of common stock outstanding for acquiring person under right agreement											4.90%
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of shares repurchased \| $			$ 8,100,000
Number of shares repurchased (in shares)			474,213
Average price of shares repurchased (in dollars per share) \| $ / shares			$ 17.09
Series B Junior Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of preferred share purchase right for each share of common stock (in shares)												1
Preferred stock, share conversion ratio												0.001
Preferred stock, par value per share (in dollars per share) \| $ / shares												$ 0.001
Preferred stock, purchase price per right (in dollars per right) \| $ / right												35.00
Preferred stock, redemption price per right (in dollars per share) \| $ / shares												$ 0.0001
Series B Junior Preferred Stock \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, number of rights expired, redeemed or exchanged (in shares)							0
ID R&D
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnout period	1 year
Fair value of earnout consideration \| $	$ 15,700,000
Acquisition-related costs and expenses \| $	$ 600,000			$ 1,100,000
ID R&D \| First Earnout Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnout period	1 year
ID R&D \| Second Earnout Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnout period	1 year
ID R&D \| Earnout Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnout shares issuable (up to) (in shares)	711,535
Acquisition-related costs and expenses \| $					$ 0	$ 0
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period for unrecognized compensation expense expected to be recognized				2 years 3 months 18 days
Awards outstanding (in shares)				2,411,267	2,661,943	2,352,487							2,580,176
Recognized compensation expense \| $				$ 8,100,000	$ 6,900,000	$ 6,800,000
Unrecognized compensation expense \| $				$ 16,000,000
Number of previously issued awards cancelled that did not meet criteria for vesting (in shares)				161,961	266,748	494,245
Performance RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period for unrecognized compensation expense expected to be recognized				2 years
Awards outstanding (in shares)				528,724	353,556	1,722,551							2,042,817
Recognized compensation expense \| $				$ 1,300,000	$ 700,000	$ 1,000,000
Unrecognized compensation expense \| $				$ 2,500,000
Vesting service period				3 years
Number of previously issued awards cancelled that did not meet criteria for vesting (in shares)				19,252	1,722,551	320,266
Performance RSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting service percentage				0.00%
Performance RSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting service percentage				133.00%
Performance options \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to options outstanding \| $				$ 100,000
Weighted average period for unrecognized compensation expense expected to be recognized				1 month 6 days
Number of common stock reserved for future grants (in shares)		800,000
Recognized compensation expense \| $				$ 800,000	$ 800,000
Vesting service period		3 years
Exercise price per share (in dollars per share) \| $ / shares		$ 9.50
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to options outstanding \| $				$ 800,000
Weighted average period for unrecognized compensation expense expected to be recognized				2 years
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)									4,500,000
Number of common stock reserved for future grants (in shares)				2,767,497
2020 Plan \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)				929,135
2020 Plan \| Performance RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)				528,724
Prior Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options to purchase common stock outstanding (in shares)				506,928
Prior Plans \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)									107,903
Awards outstanding (in shares)				1,023,130
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)														1,000,000
Number of common stock reserved for future grants (in shares)				520,865
Shares issued under the plan (in shares)				479,135
Recognized compensation expense \| $				$ 600,000	400,000	$ 400,000
ESPP \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount rate from market price purchase date				0.15
ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount rate from market price offering date				15.00%
ESPP \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense \| $				$ 700,000	$ 700,000	$ 700,000
Director Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)															1,500,000
Number of common stock reserved for future grants (in shares)				214,888
Director Plan \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options to purchase common stock outstanding (in shares)				333,819