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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 01, 2022	Sep. 30, 2022	May 02, 2019	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	100,000,000		100,000,000			100,000,000
Treasury Stock Acquired, Average Cost Per Share	$ 40.00	$ 29.94	$ 31.06	$ 34.01
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			31,095	45,198
Stock Repurchase Program, Authorized Amount					$ 40,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant	618,222		618,222
Stock Repurchase Program, Number of Shares Authorized to be Repurchased							1,000,000	1,500,000
Treasury Stock Acquired, Average Cost Per Share	$ 40.00	$ 29.94	$ 31.06	$ 34.01
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			31,095	45,198
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 0	$ 36	$ 25	$ 107
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period			0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			266
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period			13,373
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number	0		0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			266
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 99	96	$ 289	$ 289
Stock Issued During Period, Shares, Treasury Stock Reissued				83,540
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 1,200	$ 866	$ 2,941	$ 2,498
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period			130,739
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			12,987
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period			103,053
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number	330,660		330,660
Stock Issued During Period, Shares, Treasury Stock Reissued			103,053	73,627
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			12,987
Share-Based Payment Arrangement, Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Treasury Stock Reissued			2,000
Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	3,000,000.0		3,000,000.0
Repurchase Agreements [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	234	185,887	224,013	244,889

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