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Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2025
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income | The following tables set forth the changes in accumulated other comprehensive income by component as of June 30, 2025 (in thousands):
| Net unrealized gain (loss) on derivative instruments (1) |  | SL Green’s share of joint venture net unrealized loss on derivative instruments (2) |  | Net unrealized (loss) gain on marketable securities |  | Total
Balance at December 31, 2024 | $ | 29,330 |  |  | $ | (9,868) |  |  | $ | (1,266) |  |  | $ | 18,196 |
Other comprehensive (loss) income before reclassifications | (14,378) |  |  | (8,487) |  |  | 932 |  |  | (21,933) |
Amounts reclassified from accumulated other comprehensive (loss) income | (10,860) |  |  | (1,727) |  |  | — |  |  | (12,587) |
Balance at June 30, 2025 | $ | 4,092 |  |  | $ | (20,082) |  |  | $ | (334) |  |  | $ | (16,324) |
(1)Amount reclassified from accumulated other comprehensive (loss) income is included in interest expense in the respective consolidated statements of operations. As of June 30, 2025 and December 31, 2024, the deferred net gains from these terminated hedges, which is included in accumulated other comprehensive (loss) income relating to net unrealized gain (loss) on derivative instruments, was ($0.2 million) and ($0.2 million), respectively. (2)Amount reclassified from accumulated other comprehensive (loss) income is included in equity in net (loss) income from unconsolidated joint ventures in the respective consolidated statements of operations.

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