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Geographic Regions | 12 Months Ended
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Sep. 30, 2023
Segments, Geographical Areas [Abstract] |
Geographic Regions | 18. Geograph ic Regions We have operations in the United States and China, as well as satellite offices in Europe and Asia. Revenues, operating income (loss) and identifiable assets by geographic region are as follows, in thousands:
|  | Years Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Net revenue: |  |  |  |  |  |  |  |  |
United States* |  | $ | 84,549 |  |  | $ | 89,197 |  |  | $ | 58,937 |
China |  |  | 24,969 |  |  |  | 13,854 |  |  |  | 22,828 |
Other |  |  | 3,797 |  |  |  | 3,247 |  |  |  | 3,440 |
|  | $ | 113,315 |  |  | $ | 106,298 |  |  | $ | 85,205 |
Operating income (loss): |  |  |  |  |  |  |  |  |
United States* |  | $ | (17,874 | ) |  | $ | 14,163 |  |  | $ | (4,174 | )
China |  |  | 714 |  |  |  | 2,003 |  |  |  | 6,958 |
Other |  |  | 2,190 |  |  |  | 1,120 |  |  |  | 941 |
|  | $ | (14,970 | ) |  | $ | 17,286 |  |  | $ | 3,725 |
* United States revenue includ es $17.0 m illion, $22.7 million and $19.7 million in 2023, 2022 and 2021, respectively, related to the products manufactured in our China facility but sold through our Massachusetts facility.
|  | September 30, |
|  | 2023 |  |  | 2022 |
Net property, plant and equipment: |  |  |  |  |  |
United States |  | $ | 8,396 |  |  | $ | 4,981 |
China |  |  | 1,262 |  |  |  | 1,571 |
Other |  |  | 37 |  |  |  | — |
|  | $ | 9,695 |  |  | $ | 6,552 |

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