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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Dec. 01, 2022	Sep. 30, 2019	May 20, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Capital Shares Reserved for Future Issuance	713,058
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1,500,000					1,000,000.0
Treasury Stock, Shares, Acquired	511,600	124,205
Treasury Stock Acquired, Average Cost Per Share	$ 32.02	$ 44.40
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	45,198	32,323
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	0	(13,996)	(208,597)
Shares, Issued	9,000
Share-based Payment Arrangement, Cash Used to Settle Award	$ 1,100
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 23
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	16,757	38,936	283,195
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	0	0	69,338
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(3,118)	(8,183)	(105,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	13,639	16,757	38,936
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 21.60
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Authorized Amount				$ 40,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 137	$ 145	$ 2,441
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	150	308	2,984
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 386	376	390
Performance Based Phantom Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(10,464)
Shares, Issued	150,447
Share-based Payment Arrangement, Expense	$ 3,251	$ 2,986	$ 1,443
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	106,964
Shares, Outstanding	315,961	282,942
Treasury Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	556,798	170,524	528,563
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	157,167	140,280
Shares, Issued	1,707,629	1,316,998	1,287,134		884,518
Options exercised, shares	9,000	0	5,750
Share-based Payment Arrangement, Nonemployee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issued		380
Share Repurchase Program [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired		124,205
Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	3,000,000.0

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

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