Supporting Financial Information - Debt Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024
Debt Instrument [Line Items]
Long-term debt	$ 166,959
Net bank debt obligations	162,218	$ 149,374
Less: current portion of debt obligations, net of deferred financing costs (a)	(27,595)	(12,058)
Long-term portion of debt obligations, net of deferred financing costs	134,623	137,316
Term loan amortization	19,000
Secured Debt
Debt Instrument [Line Items]
Long-term debt	142,500	142,500
Less: unamortized deferred financing costs	(4,741)	(5,184)
Term loan amortization	4,800
Current unamortized deferred financing costs	1,600
Revolving Line of Credit
Debt Instrument [Line Items]
Long-term debt	24,459	12,058
Revolving Line of Credit | Secured Debt
Debt Instrument [Line Items]
Long-term debt	$ 24,459	$ 12,058