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Prepaid Expenses and Other Current Assets and Other Assets (Schedule of Prepaid Expense and Other Current Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Prepaid Expenses and Other Current Assets and Other Assets [Abstract] |  |
Short-term investments | $ 761 | $ 254,534
Assets held for sale | 95,783 |
Short-term loans receivable | 7,072 | 115,281
Prepaid real estate taxes | 5,259 | 3,564
Interest receivable | 4,139 | 4,359
Prepaid insurance | 3,179 | 1,704
Prepaid taxes | 7,065 | 11,496
Prepaid ground rent | 3,142 | 3,638
Other current assets | 17,661 | 22,757
Total prepaid expenses and other current assets | $ 144,061 | $ 417,333

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