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Major Customers and Sales by Country - Schedule of Revenues by Geographic Region (Details) - Net Revenues - Geographic Concentration Risk | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 100.00% | 100.00% | 100.00%
United States |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 39.00% | 39.00% | 27.00%
Canada |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 1.00% | 6.00% | 3.00%
Mexico |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 1.00% | 1.00% | 2.00%
Other Americas |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage |  | 2.00% | 4.00%
Total Americas |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 41.00% | 48.00% | 36.00%
China |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 20.00% | 14.00% | 17.00%
Malaysia |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 12.00% | 6.00% | 7.00%
Taiwan |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 8.00% | 5.00% | 14.00%
Other Asia |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 3.00% | 6.00% | 6.00%
Total Asia |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 43.00% | 31.00% | 44.00%
Czech Republic |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 3.00% | 5.00% |
Austria |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 1.00% | 4.00% | 10.00%
Germany |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 6.00% | 2.00% | 4.00%
Other Europe |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 6.00% | 10.00% | 6.00%
Total Europe |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 16.00% | 21.00% | 20.00%

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