Supporting Financial Information - Debt Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Sep. 30, 2025
Debt Instrument [Line Items]
Long-term debt	$ 132,690
Net bank debt obligations	129,961	$ 128,033
Less: current portion of debt obligations, net of deferred financing costs (a)	(19,450)	(8,067)
Long-term portion of debt obligations, net of deferred financing costs	110,511	119,966
Unamortized deferred financing costs	(1,600)
Secured Debt
Debt Instrument [Line Items]
Long-term debt	122,000	123,500
Less: unamortized deferred financing costs	(2,729)	(3,534)
Revolving Line of Credit
Debt Instrument [Line Items]
Long-term debt	10,690	8,067
Revolving Line of Credit | Secured Debt
Debt Instrument [Line Items]
Long-term debt	10,690	8,067
Term Loans | Secured Debt
Debt Instrument [Line Items]
Long-term debt	122,000	$ 123,500
Amortization	$ 10,400