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Net Income Per Common Share and Net Income Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Basic: |  |  |
Net income available to common stockholders | $ 411,124 | $ 226,865 | $ 116,859
Income from continuing operations available to common stockholders (in shares) | 65,471,540 | 64,871,717 | 56,546,959
Income from continuing operations available to common stockholders (in dollars per share) | $ 6.28 | $ 3.50 | $ 2.07
Effect of Dilutive Securities | $ 0 | $ 0 | $ 0
Effect of Dilutive Securities (in shares) | 116,276 | 189,968 | 149,566
Diluted: |  |  |
Income from continuing operations available to common stockholders | $ 411,124 | $ 226,865 | $ 116,859
Income from continuing operations available to common stockholders (in shares) | 65,587,816 | 65,061,685 | 56,696,525
Income from continuing operations available to common stockholders (in dollars per share) | $ 6.27 | $ 3.49 | $ 2.06
Convertible Limited Partnership Units [Member] |  |  |
Diluted: |  |  |
Anti-dilutive securities (in shares) | 2,224,100 | 2,182,467 | 2,224,707
Antidilutive securities excluded from computation of earnings per share | $ 14,100 | $ 7,800 | $ 4,900
Stock Options [Member] |  |  |
Diluted: |  |  |
Anti-dilutive securities (in shares) | 252,334 | 54,100 | 10,843
Essex Portfolio, L.P. [Member] |  |  |
Basic: |  |  |
Net income available to common stockholders | $ 425,213 | $ 234,689 | $ 121,726
Income from continuing operations available to common stockholders (in shares) | 67,695,640 | 67,054,184 | 58,771,666
Income from continuing operations available to common stockholders (in dollars per share) | $ 6.28 | $ 3.50 | $ 2.07
Effect of Dilutive Securities | $ 0 | $ 0 | $ 0
Effect of Dilutive Securities (in shares) | 116,276 | 189,968 | 149,566
Diluted: |  |  |
Income from continuing operations available to common stockholders | $ 425,213 | $ 234,689 | $ 121,726
Income from continuing operations available to common stockholders (in shares) | 67,811,916 | 67,244,152 | 58,921,232
Income from continuing operations available to common stockholders (in dollars per share) | $ 6.27 | $ 3.49 | $ 2.07

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- Definition Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. + References No definition available. + Details
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