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Major Customers and Foreign Sales - Schedule of Revenues by Geographic Region (Details) - Net Revenues - Geographic Concentration Risk | 6 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 100.00% | 100.00%
United States |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 43.00% | 33.00%
Canada |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 1.00% | 8.00%
Mexico |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 1.00% | 3.00%
Other North America |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage |  | 2.00%
Total Americas |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 45.00% | 46.00%
China |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 23.00% | 13.00%
Malaysia |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 8.00% | 9.00%
Taiwan |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 4.00% | 5.00%
Other Asia |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 4.00% | 9.00%
Total Asia |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 39.00% | 36.00%
Germany |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 8.00% | 2.00%
Austria |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 1.00% | 6.00%
Czech Republic |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 3.00% | 3.00%
Other Europe |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 4.00% | 7.00%
Total Europe |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 16.00% | 18.00%

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