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Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total property revenues | $ 326,905 | $ 327,078 | $ 319,562 | $ 312,178 | $ 308,646 | $ 302,522 | $ 294,101 | $ 280,229 | $ 1,285,723 | $ 1,185,498 | $ 961,591
Net income | 204,517 | 70,162 | 76,824 | 86,907 | 85,762 | 47,182 | 50,542 | 64,753 | 438,410 | 248,239 | 134,438
Net income available to common stockholders | $ 195,569 | $ 65,561 | $ 72,013 | $ 77,981 | $ 79,624 | $ 42,323 | $ 45,555 | $ 59,363 | $ 411,124 | $ 226,865 | $ 116,859
Net income: |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders - basic (in dollars per share) | $ 2.98 | $ 1.00 | $ 1.10 | $ 1.19 | $ 1.22 | $ 0.65 | $ 0.70 | $ 0.92 | $ 6.28 | $ 3.50 | $ 2.07
Net income available to common stockholders - diluted (in dollars per share) | 2.98 | 1.00 | 1.10 | 1.19 | 1.22 | 0.65 | 0.70 | 0.92 | $ 6.27 | $ 3.49 | $ 2.06
Market price: |  |  |  |  |  |  |  |  |  |  |
High (in dollars per share) | 234.07 | 236.56 | 237.50 | 240.55 | 244.71 | 232.20 | 231.90 | 243.17 |  |  |
Low (in dollars per share) | 200.01 | 217.16 | 207.20 | 191.25 | 214.29 | 205.72 | 208.85 | 207.26 |  |  |
Close (in dollars per share) | 232.50 | 222.70 | 228.09 | 233.86 | 239.41 | 223.42 | 212.50 | 229.90 |  |  |
Dividends declared (in dollars per share) | $ 1.6 | $ 1.60 | $ 1.60 | $ 1.60 | $ 1.44 | $ 1.44 | $ 1.44 | $ 1.44 |  |  |
Essex Portfolio, L.P. [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total property revenues | $ 326,905 | $ 327,078 | $ 319,562 | $ 312,178 | $ 308,646 | $ 302,522 | $ 294,101 | $ 280,229 | $ 1,285,723 | $ 1,185,498 | $ 961,591
Net income | 204,517 | 70,162 | 76,824 | 86,907 | 85,762 | 47,182 | 50,542 | 64,753 | 438,410 | 248,239 | 134,438
Net income available to common stockholders | $ 202,201 | $ 67,784 | $ 74,463 | $ 80,765 | $ 82,333 | $ 43,794 | $ 47,088 | $ 61,474 | $ 425,213 | $ 234,689 | $ 121,726
Net income: |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders - basic (in dollars per share) | $ 2.98 | $ 1.00 | $ 1.10 | $ 1.19 | $ 1.22 | $ 0.65 | $ 0.70 | $ 0.93 | $ 6.28 | $ 3.50 | $ 2.07
Net income available to common stockholders - diluted (in dollars per share) | 2.98 | 1.00 | 1.10 | 1.19 | 1.22 | 0.65 | 0.70 | 0.92 | $ 6.27 | $ 3.49 | $ 2.07
Market price: |  |  |  |  |  |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 1.6 | $ 1.6 | $ 1.6 | $ 1.6 | $ 1.44 | $ 1.44 | $ 1.44 | $ 1.44 |  |  |

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