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12. SEGMENT AND GEOGRAPHIC INFORMATION (Tables) | 6 Months Ended
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Sep. 30, 2025
SEGMENT AND GEOGRAPHIC INFORMATION |
Schedule of net revenues by geographic area | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Six Months Ended September 30,
​ | ​ | 2025 | ​ | 2024 | ​ | 2025 | ​ | 2024
​ | ​ | (In thousands) | ​ | (In thousands)
United States |  | $ | 3,414 |  | $ | 1,885 |  | $ | 7,887 |  | $ | 3,451
China | ​ | ​ | 995 | ​ | ​ | 797 | ​ | ​ | 1,399 | ​ | ​ | 1,895
Singapore | ​ | ​ | 624 | ​ | ​ | 505 | ​ | ​ | 1,108 | ​ | ​ | 1,280
Netherlands | ​ | ​ | 106 | ​ | ​ | 237 | ​ | ​ | 209 | ​ | ​ | 273
Germany | ​ | ​ | 1,051 | ​ | ​ | 978 | ​ | ​ | 1,622 | ​ | ​ | 1,908
Rest of the world | ​ | ​ | 254 | ​ | ​ | 148 | ​ | ​ | 502 | ​ | ​ | 414
​ | ​ | $ | 6,444 | ​ | $ | 4,550 | ​ | $ | 12,727 | ​ | $ | 9,221
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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