Shares, vested

No definition available.

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- Definition

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

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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.

+ References

No definition available.

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- Definition

Net number of non-option equity instruments granted to participants.

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- Definition

Number of shares issued under share-based payment arrangement.

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- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

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- Definition

Number of shares issued which are neither cancelled nor held in the treasury.

+ References

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.

+ References

No definition available.

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- Definition

Number of shares (or other type of equity) forfeited during the period.

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No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

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

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- Definition

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

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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	May 02, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	100,000,000		100,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	8,183
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	0
Shares Issued, Shares, Share-based Payment Arrangement, Forfeited	114,020
Shares, vested	87,769
Shares, Outstanding	253,809
Treasury Stock Acquired, Average Cost Per Share		$ 22.51
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 274
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	16,882	17,427
Common Stock, Capital Shares Reserved for Future Issuance	855,053
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1,500,000				1,000,000.0
Treasury Stock Acquired, Average Cost Per Share		$ 22.51
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	16,882	17,427
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 274
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	13,996
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 38	$ 366
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	96	100
Performance Based Phantom Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 697	$ 429
Treasury Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	30,878	37,244
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	38,087	95,409
Shares, Issued	1,279,545	826,353	1,287,134	884,518
Share-based Payment Arrangement, Nonemployee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issued	380
Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	3,000,000.0
Repurchase Agreements [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	0	19,817