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Fair Value Measurements - Acquisitions (Details) | Sep. 12, 2022 USD ($) $ / shares shares | Sep. 09, 2022 USD ($) shares | May 03, 2021 USD ($) | May 03, 2021 EUR (€) | Feb. 23, 2021 USD ($) | Apr. 30, 2024 USD ($) | Apr. 30, 2024 EUR (€) | Apr. 30, 2023 USD ($) | Apr. 30, 2023 EUR (€) | Apr. 30, 2022 USD ($) | Jan. 27, 2022 USD ($) | Jan. 27, 2022 EUR (€)
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Amprius Technologies, Inc. |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Company Invested amount | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |
Amprius Technologies, Inc. | Equity securities |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Number of shares purchased | shares | 500,000 |  |  |  |  |  |  |  |  |  |  |
Amprius Technologies, Inc. | Redeemable warrant |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants acquired | shares | 500,000 |  |  |  |  |  |  |  |  |  |  |
Nauticus Robotics, Inc. | Equity securities |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Company Invested amount |  | $ 100,000 |  |  |  |  |  |  |  |  |  |
Number of shares purchased | shares |  | 10,000 |  |  |  |  |  |  |  |  |  |
Intelligent Systems Group |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Period to obtain target |  |  |  |  | 3 years |  |  |  |  |  |  |
Intelligent Systems Group | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  | $ 6,000,000 |  |  |  |  |  |  |
Intelligent Systems Group | Business Combination, Specific Revenue Targets Achieved In First Earnout Year |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Released from escrow |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |
Intelligent Systems Group | Business Combination Specific Revenue Targets Achieved in Second and Third Earnout Year |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Released from escrow |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |
Telerob |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Period to obtain target |  |  | 36 months | 36 months |  |  |  |  |  |  |  |
Amount of earnout amount not achieved |  |  |  |  |  | $ 2,139,000 | € 2,000,000 |  |  |  | $ 2,139,000 | € 2,000,000
Amount of second year earnout amount achieved |  |  |  |  |  |  |  | $ 2,132,000 | € 2,000,000 |  |  |
Telerob | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Additional cash consideration |  |  | $ 6,418,000 | € 6,000,000 |  |  |  |  |  |  |  |
Amprius Technologies, Inc. | Amprius Technologies, Inc. | Redeemable warrant |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Exercise Price of warrants | $ / shares | $ 12.50 |  |  |  |  |  |  |  |  |  |  |
Redemption price | $ / shares | $ 20.00 |  |  |  |  |  |  |  |  |  |  |
Amprius Technologies, Inc. | Amprius Technologies, Inc. | Redeemable warrant | Measurement Input, Exercise Price |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Investment in warrants | $ / shares | 11.50 |  |  |  |  |  |  |  |  |  |  |
Amprius Technologies, Inc. | Amprius Technologies, Inc. | Redeemable warrant | Measurement Input, Redemption Price |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurement |  |  |  |  |  |  |  |  |  |  |  |
Investment in warrants | $ / shares | 18.00 |  |  |  |  |  |  |  |  |  |  |

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