Credit Facilities - Narrative (Details)	3 Months Ended
	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)
Line of Credit Facility [Line Items]
Debt amortization fiscal year 2021	$ 23,333,000
Debt amortization fiscal year 2022	19,000,000
Debt amortization fiscal year 2023	19,000,000
Debt amortization fiscal year 2024	23,750,000
Long-term debt	203,377,000
Interest Rate Swap
Line of Credit Facility [Line Items]
Derivative notional amount	$ 16,200,000
Derivative fixed interest rate	1.61%
Interest expense increase (less than)	$ 100,000
Secured Debt
Line of Credit Facility [Line Items]
Long-term debt	$ 186,438,000	$ 22,000,000
Secured Debt | Term Loans
Line of Credit Facility [Line Items]
Fixed charge coverage ratio	1.25
Ratio of funded indebtedness to EBITDA through maturity	2.00
Debt amortization fiscal year 2021	$ 14,250,000
Debt amortization fiscal year 2022	14,250,000
Debt amortization fiscal year 2023	19,000,000
Debt amortization fiscal year 2024	19,000,000
Debt amortization fiscal year 2025	23,750,000
Voluntary principal amortization of term debt	3,600,000
Long-term debt	$ 16,900,000
Secured Debt | Term Loans | Excess Cash Flows 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 EBDTA	75.00%
Ratio of funded indebtedness to adjusted EBDTA, actual	2.50
Secured Debt | Term Loans | Excess Cash Flows Less Than 2.50
Line of Credit Facility [Line Items]
Percentage of excess cash flow for each year of funded indebtedness to EBDTA	50.00%
Secured Debt | Term Loans | Excess Cash Flows Equal to 1.50
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to adjusted EBDTA, actual	1.5
Secured Debt | Term Loans | Excess Cash Flows Less Than 1.50
Line of Credit Facility [Line Items]
Percentage of excess cash flow for each year of funded indebtedness to EBDTA	0.00%
Ratio of funded indebtedness to adjusted EBDTA, actual	1.5
Secured Debt | Term Loans | Maximum
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to EBITDA through maturity	4.50
Secured Debt | Term Loans | Maximum | Excess Cash Flows Less Than 2.50
Line of Credit Facility [Line Items]
Ratio of funded indebtedness to adjusted EBDTA, actual	2.50
Secured Debt | Term Loans | LIBOR
Line of Credit Facility [Line Items]
Interest rate spread	4.23%
Secured Debt | Revolving Line of Credit
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 70,000,000
Line of credit, unused borrowing capacity	31,200,000
Line of credit, current borrowing capacity	70,000,000
Long-term debt	$ 186,400,000
Secured Debt | Revolving Line of Credit | LIBOR
Line of Credit Facility [Line Items]
Interest rate spread	4.23%
Secured Debt | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit, current borrowing capacity		$ 5,000,000