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Equity Investments (Narrative) (Details) - USD ($) shares in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |  |
Carrying value | $ 14,519,000 |  | $ 8,896,000
Long-term investments | 972,644,000 |  | $ 564,488,000
Unrealized loss | $ 6,016,000 |  |
Tractor |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investment shares owned (in shares) | 5,406 |  | 4,325
Ownership percentage | 12.50% |  |
Cash consideration | $ 12,500,000 |  |
Equity method investment, impairment | 0 | $ 0 |
Carrying value | $ 14,519,000 |  | $ 8,896,000
Tractor Warrants |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Number of shares that may be called by warrants (in shares) | 1,081 |  | 2,162
Long-term investments | $ 4,395,000 |  | $ 8,675,000
Nuro |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investment shares owned (in shares) | 766 |  |
Long-term investments | $ 15,968,000 |  | 15,968,000
Recognized gain | 5,968,000 |  |
Cultivate Fund |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Long-term investments | $ 16,561,000 |  | $ 21,221,000

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