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Major Customers and Foreign Sales - Schedule of Revenues by Geographic Region (Details) - Net Revenues - Geographic Concentration Risk | 9 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 100.00% | 100.00%
United States |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 34.00% | 24.00%
Canada |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 8.00% | 2.00%
Other North America |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 3.00% | 5.00%
Total Americas |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 45.00% | 31.00%
China |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 15.00% | 19.00%
Malaysia |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 7.00% | 8.00%
Taiwan |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 6.00% | 13.00%
Other Asia |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 7.00% | 6.00%
Total Asia |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 35.00% | 46.00%
Germany |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 2.00% | 5.00%
Austria |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 5.00% | 11.00%
Other Europe |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 13.00% | 7.00%
Total Europe |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage | 20.00% | 23.00%

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