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Partners Equity of the Operating Partnership - Number of Units and Net Income Used to Calculate Basic and Diluted Earnings Per Common Partnership Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Numerator |  |
Net income | $ 44,705 | $ 21,271
Distribution to preferred shareholders | 0 | (1,725)
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic | (114) | (99)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted | $ (114) | $ (99)
Denominator |  |
Basic weighted average shares outstanding (in shares) | 178,395,525 | 175,176,964
Contingent securities/Share based compensation (in shares) | 1,392,786 | 1,024,908
Diluted weighted average shares outstanding (in shares) | 179,788,311 | 176,201,872
Earnings per Common Partnership Unit: |  |
Net income attributable to common shareholders, Basic (USD per share) | $ 0.25 | $ 0.11
Net income attributable to common shareholders, Diluted (USD per share) | $ 0.25 | $ 0.11
BRANDYWINE OPERATING PARTNERSHIP, L.P. |  |
Numerator |  |
Net income | $ 44,705 | $ 21,271
Net income attributable to noncontrolling interests | (5) | (5)
Distribution to preferred shareholders | 0 | (1,725)
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic | (114) | (99)
Net income attributable to common unitholders, Basic | 44,586 | 19,442
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted | (114) | (99)
Net income attributable to common unitholders, Diluted | $ 44,586 | $ 19,442
Denominator |  |
Basic weighted average shares outstanding (in shares) | 179,875,324 | 176,656,763
Contingent securities/Share based compensation (in shares) | 1,392,786 | 1,024,908
Diluted weighted average shares outstanding (in shares) | 181,268,110 | 177,681,671
Earnings per Common Partnership Unit: |  |
Net income attributable to common shareholders, Basic (USD per share) | $ 0.25 | $ 0.11
Net income attributable to common shareholders, Diluted (USD per share) | $ 0.25 | $ 0.11

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