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Geographic Information (Details) - USD ($) | 12 Months Ended
--- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2019
Product Information |  |  |
Deploys in-service assets |  | $ 36,047,000 |
Non-U.S. customers |  |  |
Product Information |  |  |
Percentage of revenue | 39.00% | 45.00% | 52.00%

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