Long Term Debt - Schedule of Long-term Debt (Details) - Nonrelated Party - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Debt Instrument [Line Items]
Total long-term debt	$ 100,121	$ 102,344
Less: unamortized debt issuance costs	(541)	(557)
Net amount	99,580	101,787
Less: current portion	(21,223)	(23,077)
Total long-term debt	78,357	78,710
Revolver loans
Debt Instrument [Line Items]
Total long-term debt	56,022	56,779
Equipment loans
Debt Instrument [Line Items]
Total long-term debt	14,419	15,486
Term loans
Debt Instrument [Line Items]
Total long-term debt	13,669	14,290
Other notes payable
Debt Instrument [Line Items]
Total long-term debt	$ 16,011	$ 15,789