Prepaid Expenses and Other Current Assets and Other Assets (Schedule of Prepaid Expense and Other Current Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Prepaid Expenses and Other Current Assets and Other Assets [Abstract]
Short-term investments	$ 65,730	$ 254,534
Short-term loans receivable		115,281
Prepaid real estate taxes	3,805	3,564
Interest receivable	1,540	4,359
Prepaid insurance	4,620	1,704
Prepaid taxes	11,725	11,496
Prepaid ground rent	4,196	3,638
Other current assets	25,398	22,757
Total prepaid expenses and other current assets	$ 117,014	$ 417,333