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Partners' Capital of the Operating Partnership - EPS (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Denominator |  |  |  |
Weighted average common shares outstanding (shares) | 87,176,000 | 99,900,000 | 88,772,000 | 100,268,000
Common stock shares excluded from the diluted shares outstanding (shares) | 1,158,317 |  | 1,184,735 |
SL Green Operating Partnership |  |  |  |
Numerator |  |  |  |
Net income attributable to SLGOP common unitholders | $ 109,142 | $ 8,641 | $ 216,180 | $ 20,468
Denominator |  |  |  |
Weighted average common shares outstanding (shares) | 91,882,000 | 104,462,000 | 93,467,000 | 104,852,000
Stock-based compensation plans (shares) | 201,000 | 270,000 | 200,000 | 288,000
Diluted weighted average common units outstanding (shares) | 92,083,000 | 104,732,000 | 93,667,000 | 105,140,000
Common stock shares excluded from the diluted shares outstanding (shares) | 1,158,317 | 986,390 | 1,184,735 | 979,676

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