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Significant Accounting Policies - Revenue Recognition / Income Tax (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |
Interest income | $ 19,300,000 | $ 4,900,000 | $ 60,900,000
Offering costs | 400,000 | 0 | 1,600,000
Excise tax expense | $ 16,795,000 | $ 1,386,000 | $ 2,438,000

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