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Fair Value Measurements - Estimated Fair Value of Equity Securities Assumptions (Details) - $ / shares | Mar. 31, 2022 | Dec. 31, 2021
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Closing Common Stock Price [Member] |  |
Fair Value Measurements |  |
Closing stock price (in dollars per share) | $ 3.38 | $ 4.78

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- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
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