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Partners' Capital of the Operating Partnership - EPS (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Numerator |  |  |  |
Net Income (Loss) Available To Common Stockholders, After Distributed And Undistributed Earnings Allocation, Basic | $ 88,051 | $ 38,760 | $ 293,022 | $ 58,112
Add back: undistributed earnings allocated to participating securities | 33 | 0 | 138 | 0
Add back: distributed earnings allocated to participating securities | 125 | 109 | 371 | 330
Income attributable to SL Green common stockholders | $ 93,006 | $ 40,681 | $ 309,187 | $ 61,149
Denominator |  |  |  |
Weighted average common shares outstanding (shares) | 85,566,000 | 97,783,000 | 87,692,000 | 99,431,000
Common stock shares excluded from the diluted shares outstanding (shares) | 941,636 |  | 1,137,971 |
SL Green Operating Partnership |  |  |  |
Stockholders' Equity |  |  |  |
Basic weighted average common units outstanding (in shares) | 90,209,000 |  |  |
Numerator |  |  |  |
Net income attributable to SLGOP common unitholders | $ 93,006 | $ 40,681 | $ 309,187 | $ 61,149
Less: distributed earnings allocated to participating securities | (125) | (109) | (371) | (330)
Less: undistributed earnings allocated to participating securities | (33) | 0 | (138) | 0
Net Income (Loss) Available To Common Stockholders, After Distributed And Undistributed Earnings Allocation, Basic | 92,848 | 40,572 | 308,678 | 60,819
Add back: undistributed earnings allocated to participating securities | 33 | 0 | 138 | 0
Add back: distributed earnings allocated to participating securities | 125 | 109 | 371 | 330
Income attributable to SL Green common stockholders | $ 93,006 | $ 40,681 | $ 309,187 | $ 61,149
Denominator |  |  |  |
Weighted average common shares outstanding (shares) |  | 102,326,000 | 92,369,000 | 104,001,000
Stock-based compensation plans (shares) | 219,000 | 244,000 | 211,000 | 279,000
Diluted weighted average common units outstanding (shares) | 90,428,000 | 102,570,000 | 92,580,000 | 104,280,000
Common stock shares excluded from the diluted shares outstanding (shares) | 941,636 | 1,175,708 | 1,137,971 | 1,076,695

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