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v3.25.1

Summary of Significant Accounting Policies - Concentrations (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 item customer | Mar. 31, 2024 customer item | Mar. 31, 2025 customer item | Mar. 31, 2024 customer item
Concentration of Credit Risk |  |  |  |
Number of banks for maintenance of cash balances | 2 |  | 2 |
Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Number of major customers | customer | 5 | 2 | 5 | 1
Supplier Concentration Risk | Inventory |  |  |  |
Concentrations |  |  |  |
Number of major suppliers | 1 | 1 | 1 | 2
Lockheed Martin Corporation | Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Concentration of risk (as a percent) | 48.00% |  | 44.00% |
Atlas Air Inc | Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Concentration of risk (as a percent) | 9.00% |  | 7.00% |
Boeing Company | Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Concentration of risk (as a percent) | 5.00% |  | 6.00% |
Pilatus Aircraft Ltd | Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Concentration of risk (as a percent) | 5.00% | 28.00% | 5.00% | 29.00%
Kalitta Air Inc | Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Concentration of risk (as a percent) | 5.00% |  | 4.00% |
Textron Aviation, Inc | Customer Concentration Risk | Revenues Net |  |  |  |
Concentrations |  |  |  |
Concentration of risk (as a percent) |  | 17.00% |  |

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