Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of disaggregation of revenue (Details)

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Summary of Significant Accounting Policies - Schedule of disaggregation of revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Disaggregation Of Revenue [Line Items]        
Total operating revenues $ 13,610 $ 7,284 $ 45,708 $ 39,166
Revenue recognized at a point-in-time        
Disaggregation Of Revenue [Line Items]        
Total operating revenues 12,291 6,285 42,250 36,939
Revenue recognized over time        
Disaggregation Of Revenue [Line Items]        
Total operating revenues $ 1,319 $ 999 $ 3,458 $ 2,227