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Geographic Regions | 12 Months Ended
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Sep. 30, 2022
Segments, Geographical Areas [Abstract] |
Geographic Regions | 20. Geographic Regions We have continuing 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, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Net revenue: |  |  |  |  |  |  |  |  |
United States* |  | $ | 89,197 |  |  | $ | 58,937 |  |  | $ | 48,089 |
China |  |  | 13,854 |  |  |  | 22,828 |  |  |  | 13,510 |
Other |  |  | 3,247 |  |  |  | 3,440 |  |  |  | 3,864 |
|  | $ | 106,298 |  |  | $ | 85,205 |  |  | $ | 65,463 |
Operating income (loss): |  |  |  |  |  |  |  |  |
United States* |  | $ | 14,163 |  |  | $ | (4,174 | ) |  | $ | (5,814 | )
China |  |  | 2,003 |  |  |  | 6,958 |  |  |  | 4,744 |
Other |  |  | 1,120 |  |  |  | 941 |  |  |  | 585 |
|  | $ | 17,286 |  |  | $ | 3,725 |  |  | $ | (485 | )
* United States revenue includes $22.7 million, $19.7 million and $14.9 million in 2022, 2021 and 2020, respectively, related to the products manufactured in our China facility but sold through our Massachusetts facility.
|  | September 30, |
|  | 2022 |  |  | 2021 |
Net property, plant and equipment: |  |  |  |  |  |
United States |  | $ | 4,981 |  |  | $ | 11,990 |
China |  |  | 1,571 |  |  |  | 2,093 |
|  | $ | 6,552 |  |  | $ | 14,083 |

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