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 Arrangement by Share-based Payment Award, Offering Period

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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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- Definition

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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- Definition

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

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- Definition

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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- Definition

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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- 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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- Definition

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

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

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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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- 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	6 Months Ended
Stock-Based Compensation (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Jan. 29, 2020	Feb. 04, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	95,209	91,040
Tax withholding for share-based compensation	$ 1,700	$ 1,000
Employee contributions	516	549
Total intrinsic value of all options exercised	3,300	1,600
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost nonvested awards	$ 7,300
Weighted average period, unrecognized compensation cost, nonvested awards	3 years 1 month 6 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost nonvested restricted stock units	$ 10,600
Weighted average period, unrecognized compensation cost, nonvested awards	1 year 9 months 18 days
The Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			3,425,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Continuous Days of Service	90 days
Share-based Compensation Arrangement by Share-based Payment Award, Number of Hours Per Week Employed	20 hours
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Offering Period	3 months
Employee contributions	$ 500	$ 549
Common shares issued to employees	53,085	63,694
Shares available for future issuance	776,455
The 2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized				1,500,000
Number of shares available for future grants	1,307,117
The 2019 Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Expiration period	7 years
Director \| The 2019 Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Executives and Employees \| The 2019 Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years