Share-based Compensation Arrangement by Share-based Payment Award, Number of Continuous Days of Service

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Hours Per Week Employed

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- Definition

Share Based Compensation Employee Stock Purchase Plan Shares Available For Future Purchase

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- Definition

Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment 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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Amount of cash inflow from exercise of option under share-based payment arrangement.

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The cash inflow associated with the amount received from the stock plan during the period.

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- Definition

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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- Definition

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

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- Definition

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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- Definition

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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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

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

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No definition available.

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- Definition

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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No definition available.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
Stock-Based Compensation (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Jan. 29, 2021	Jan. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	116,195	103,492	93,128
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 2,100	$ 1,800	$ 1,100
Proceeds from employee stock purchase plan transactions	1,214	1,065	1,058
Total intrinsic value of all options exercised	6,500	3,700	2,100
Total grant date fair value of shares vested	2,600	3,700	3,500
Proceeds from Stock Options Exercised	8,525	5,902	4,874
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost nonvested awards	$ 5,700
Weighted average period, unrecognized compensation cost, nonvested awards	1 year 9 months 18 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period, unrecognized compensation cost, nonvested awards	1 year 3 months 18 days
Total unrecognized compensation cost, restricted stock units	$ 9,200
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of continuous days of service	90 days
Number of hours per week employed	20 hours
Percent of market value	85.00%
Proceeds from employee stock purchase plan transactions	$ 1,200	$ 1,100	$ 1,100
Common shares issued to employees	78,644	117,826	111,036
Shares available for future issuance	633,070
The 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grants	1,413,615
Number of shares authorized					1,500,000
The 2020 Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	7 years
Vesting period	4 years
The Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized					3,425,000
The 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized				1,400,000
The 2021 Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	7 years
Vesting period	4 years
Director \| The 2020 Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Director \| The 2021 Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	1 year
Vesting period	4 years
Director \| The 2021 Plan \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Executives and Employees \| The 2020 Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Executives and Employees \| The 2021 Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years