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Stockholders' Equity of the Company (Tables) | 9 Months Ended
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Sep. 30, 2024
Stockholders' Equity Note [Abstract] |
Schedule of Common Stock Issued and Proceeds Received Dividend Reinvestments | The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2024 and 2023, respectively (dollars in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Shares of common stock issued | 338,704 |  |  | 2,695 |  |  | 341,180 |  |  | 14,736 |
Dividend reinvestments/stock purchases under the DRSPP | $ | 23,633 |  |  | $ | 97 |  |  | $ | 23,754 |  |  | $ | 439 |
Schedule of Earnings Per Share | SL Green's earnings per share for the three and nine months ended September 30, 2024 and 2023 are computed as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
Numerator | 2024 |  | 2023 |  | 2024 |  | 2023
Basic Earnings: |  |  |  |  |  |  |
Loss attributable to SL Green common stockholders | $ | (13,279) |  |  | $ | (23,967) |  |  | $ | (2,298) |  |  | $ | (423,892) |
Less: distributed earnings allocated to participating securities | (435) |  |  | (408) |  |  | (1,309) |  |  | (1,225) |
Net loss attributable to SL Green common stockholders (numerator for basic earnings per share) | $ | (13,714) |  |  | $ | (24,375) |  |  | $ | (3,607) |  |  | $ | (425,117) |
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares | — |  |  | — |  |  | — |  |  | — |
Add back: effect of dilutive securities (redemption of units to common shares) | — |  |  | (1,574) |  |  | — |  |  | (27,493) |
Net loss attributable to SL Green common stockholders (numerator for diluted earnings per share) | $ | (13,714) |  |  | $ | (25,949) |  |  | $ | (3,607) |  |  | $ | (452,610) |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
Denominator | 2024 |  | 2023 |  | 2024 |  | 2023
Basic Shares: |  |  |  |  |  |  |
Weighted average common stock outstanding | 64,388 |  |  | 64,114 |  |  | 64,355 |  |  | 64,099 |
Effect of Dilutive Securities: |  |  |  |  |  |  |
Operating Partnership units redeemable for common shares | — |  |  | 4,182 |  |  | — |  |  | 4,175 |
Diluted weighted average common stock outstanding | 64,388 |  |  | 68,296 |  |  | 64,355 |  |  | 68,274 |

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- Definition Schedule of Common Stock Issued and Proceeds Received Dividend Reinvestments [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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