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4. BALANCE SHEET DETAIL - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
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Prepaid expenses and other current assets: |  |
Prepaid tooling and masks | $ 1,315 | $ 1,834
Other receivables | 112 | 695
Other prepaid expenses and other current assets | 740 | 432
Total prepaid expenses and other current assets | $ 2,167 | $ 2,961

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