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Investments (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Investments |  |
Investments - Available-for-sale | $ 63,867 | $ 0
Available-for-sale investments |  |
Adjusted Cost | 64,388 |
Gross Unrealized Gains | 6 |
Gross Unrealized (Losses) | (527) |
Estimated Fair Value | 63,867 |
Net unrealized gain (loss) on available-for-sale debt securities | 398 |
Corporate bonds |  |
Available-for-sale investments |  |
Adjusted Cost | 31,967 |
Gross Unrealized Gains | 6 |
Gross Unrealized (Losses) | (410) |
Estimated Fair Value | 31,563 |
Commercial paper |  |
Available-for-sale investments |  |
Adjusted Cost | 32,421 |
Gross Unrealized (Losses) | (117) |
Estimated Fair Value | $ 32,304 |

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