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Stockholders' Equity of the Company (Tables) | 9 Months Ended
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Sep. 30, 2020
Stockholders' Equity Note [Abstract] |
Class of Treasury Stock | At September 30, 2020, repurchases executed under the program were as follows:
Period | Shares repurchased | Average price paid per share | Cumulative number of shares repurchased as part of the repurchase plan or programs |
Year ended 2017 | 8,342,411 | $101.64 | 8,342,411 |
Year ended 2018 | 9,744,911 | $96.22 | 18,087,322 |
Year ended 2019 | 4,596,171 | $83.62 | 22,683,493 |
Nine months ended September 30, 2020 (1) | 6,243,165 | $62.77 | 28,926,658 |
(1) Includes 216,101 shares of common stock repurchased by the Company in September 2020 that were settled in October 2020.
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, 2020 and 2019, respectively (dollars in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Shares of common stock issued | 4,205 |  |  | 490 |  |  | 9,884 |  |  | 3,485 |
Dividend reinvestments/stock purchases under the DRSPP | $ | 202 |  |  | $ | 39 |  |  | $ | 566 |  |  | $ | 303 |
Schedule of Earnings Per Share | SL Green's earnings per share for the three and nine months ended September 30, 2020 and 2019 are computed as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
Numerator | 2020 |  | 2019 |  | 2020 |  | 2019
Basic Earnings: |  |  |  |  |  |  |
Income attributable to SL Green common stockholders | $ | 13,859 |  |  | $ | 33,157 |  |  | $ | 185,104 |  |  | $ | 238,052 |
Less: distributed earnings allocated to participating securities | (333) |  |  | (108) |  |  | (777) |  |  | (325) |
Less: undistributed earnings allocated to participating securities | — |  |  | — |  |  | (141) |  |  | (41) |
Net income attributable to SL Green common stockholders (numerator for basic earnings per share) | $ | 13,526 |  |  | $ | 33,049 |  |  | $ | 184,186 |  |  | $ | 237,686 |
Add back: dilutive effect of earnings allocated to participating securities | 333 |  |  | 108 |  |  | 777 |  |  | 325 |
Add back: undistributed earnings allocated to participating securities | — |  |  | — |  |  | 141 |  |  | 41 |
Add back: effect of dilutive securities (redemption of units to common shares) | 802 |  |  | 1,719 |  |  | 10,073 |  |  | 12,306 |
Income attributable to SL Green common stockholders (numerator for diluted earnings per share) | $ | 14,661 |  |  | $ | 34,876 |  |  | $ | 195,177 |  |  | $ | 250,358 |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
Denominator | 2020 |  | 2019 |  | 2020 |  | 2019
Basic Shares: |  |  |  |  |  |  |
Weighted average common stock outstanding | 73,020 |  |  | 82,292 |  |  | 75,521 |  |  | 82,855 |
Effect of Dilutive Securities: |  |  |  |  |  |  |
Operating Partnership units redeemable for common shares | 4,029 |  |  | 4,258 |  |  | 4,123 |  |  | 4,283 |
Stock-based compensation plans | 442 |  |  | 164 |  |  | 441 |  |  | 171 |
Diluted weighted average common stock outstanding | 77,491 |  |  | 86,714 |  |  | 80,085 |  |  | 87,309 |

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