Credit Facilities - Narrative (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Line of Credit Facility [Line Items]
Debt annual amortization amount fiscal year 2024	$ 27,313	$ 20,188
Debt annual amortization amount fiscal year 2025	12,058
Debt annual amortization amount fiscal year 2026	19,000
Debt annual amortization amount fiscal year 2027	23,750
Secured term loan	154,558
Interest Rate Swap
Line of Credit Facility [Line Items]
Decrease in interest expense	1,300
Interest Rate Swap Due 2026
Line of Credit Facility [Line Items]
Notional amount of floating-to-fix interest rate swap	$ 80,000
Fixed interest rate applicable to swaps	4.10%
Secured revolving line of credit
Line of Credit Facility [Line Items]
Secured term loan	$ 12,058	9,546
Secured Debt
Line of Credit Facility [Line Items]
Secured term loan	$ 142,500	169,813
Secured Debt | Term loan
Line of Credit Facility [Line Items]
Fixed charge coverage ratio	1.25
Debt annual amortization amount fiscal year 2024	$ 14,300
Debt annual amortization amount fiscal year 2025	19,000
Debt annual amortization amount fiscal year 2026	19,000
Debt annual amortization amount fiscal year 2027	23,800
Voluntary repayments of debt	19,000
Secured term loan	$ 142,500	169,800
Secured Debt | Term loan | Maximum
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to EBITDA through maturity	4.50
Secured Debt | Term loan | Minimum
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to EBITDA through maturity	2.00
Secured Debt | Term loan | Excess Cash Flow Greater Than or Equal to 2.50
Line of Credit Facility [Line Items]
Percentage of excess cash flow for each year of funded indebtedness to adjusted EBITDA	75.00%
Ratio of funded indebtedness to adjusted EBIDTA	2.50
Secured Debt | Term loan | Excess Cash Flow Less Than 2.50 But Greater Than or Equal to 1.50
Line of Credit Facility [Line Items]
Percentage of excess cash flow for each year of funded indebtedness to adjusted EBITDA	50.00%
Secured Debt | Term loan | Excess Cash Flows Less Than 2.50
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to adjusted EBIDTA	2.50
Secured Debt | Term loan | Excess Cash Flow Equal to 1.50
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to adjusted EBIDTA	1.50
Secured Debt | Term loan | Excess Cash Flow Less Than 1.50
Line of Credit Facility [Line Items]
Percentage of excess cash flow for each year of funded indebtedness to adjusted EBITDA	0.00%
Ratio of funded indebtedness to adjusted EBIDTA	1.50
Secured Debt | Secured revolving line of credit
Line of Credit Facility [Line Items]
Secured term loan	$ 12,100	$ 9,500
Line of credit ceiling	32,500
Unused borrowing capacity	18,100
Secured Debt | Letters of credit
Line of Credit Facility [Line Items]
Remaining borrowing availability	$ 10,000