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Merger with Spring Valley (Details) - USD ($) $ in Thousands | May 02, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Subscription Agreements |  |  |
Subsequent Event [Line Items] |  |  |
Value of shares issued contingent on closing of the Merger |  | $ 211,000 | $ 211,000
Value of shares issued contingent on entry into definitive documents |  | $ 30,000 | $ 30,000
Class A Common Stock |  |  |
Subsequent Event [Line Items] |  |  |
Share exchange ratio |  | 1 | 1
Class B ordinary share |  |  |
Subsequent Event [Line Items] |  |  |
Share exchange ratio |  | 1 | 1
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Proceeds from merger | $ 341,000 |  |

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