Summary of Significant Accounting Policies - Schedule of disaggregation of revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disaggregation Of Revenue [Line Items]
Total operating revenues	$ 16,894	$ 13,985
Revenue recognized at a point-in-time
Disaggregation Of Revenue [Line Items]
Total operating revenues	15,555	12,901
Revenue recognized over time
Disaggregation Of Revenue [Line Items]
Total operating revenues	$ 1,339	$ 1,084