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Related Party Transactions (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Related Party Transaction [Line Items] |  |  |  |
Management fees |  |  | $ 5,199,000 | $ 20,252,000
Manager | General and Administrative Expense | Management Fees |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  | 5,200,000 | 20,300,000
Affiliated entity | iStar Inc. |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Management fee, percent, threshold one | 1.00% |  |  |
Management fee, percent, threshold two | 1.25% |  |  |
Management fee, percent, threshold three | 1.375% |  |  |
Management fee, percent, threshold four | 1.50% |  |  |
Management fee, transaction share price (in dollars per share) | $ 20 |  |  |
Management fee paid with common stock, period of restriction from selling stock | 2 years |  |  |
Termination fee, percent of prior years management fee | 300.00% |  |  |
Affiliated entity | Manager | iStar Inc. | General and Administrative Expense | Incentive Fee |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 0 |  |  |
Affiliated entity | Minimum | iStar Inc. |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Management fee, shareholders' equity, incremental threshold amount two | 1,500,000,000 |  |  |
Management fee, shareholders' equity, incremental threshold amount three | 3,000,000,000 |  |  |
Management fee, shareholders' equity, incremental threshold amount four | 5,000,000,000 |  |  |
Affiliated entity | Maximum | iStar Inc. |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Management fee, shareholders' equity, incremental threshold amount one | 1,500,000,000 |  |  |
Management fee, shareholders' equity, incremental threshold amount two | 3,000,000,000 |  |  |
Management fee, shareholders' equity, incremental threshold amount three | $ 5,000,000,000 |  |  |
iStar Inc. | General and Administrative Expense |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  | $ 3,100,000 | $ 12,500,000
iStar, Inc. | Minimum |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Number of years as active real estate investor |  | 20 years |  |

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