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Equity and Other Investments and Fair Value Measurements - Equity and Other Investments in InCarda (Details) - InCarda - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Equity Investment |  |
Maximum number of additional shares into which warrants may be converted under the securities purchase agreement | 2,490,033 |
Consolidated Investees [Member] |  |
Equity Investment |  |
Equity investment ownership percentage | 9.10% |
Convertible Notes |  |
Equity Investment |  |
Equity and long-term investments at fair value | $ 0.9 | $ 0.4
InCarda 2025 Convertible Note |  |
Equity Investment |  |
Amount of securities purchase agreement | 0.5 |
InCarda 2024 Convertible Note |  |
Equity Investment |  |
Amount of securities purchase agreement | $ 0.4 |
Common and preferred stock |  |
Equity Investment |  |
Number of shares to be purchased under the securities purchase agreement | 36,742,250 |
Series C preferred stock |  |
Equity Investment |  |
Equity and long-term investments at fair value | $ 4.8 | 4.8
Warrants |  |
Equity Investment |  |
Equity and long-term investments at fair value | 0.1 | 0.1
Series D 1 And D 2 Preferred Stock And Common Stock |  |
Equity Investment |  |
Equity and long-term investments at fair value | $ 2.7 | $ 2.7

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