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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015
Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001
Common stock, shares authorized (in shares) | 670,000,000 | 670,000,000
Common stock, shares issued (in shares) | 65,522,585 | 65,379,359
Common stock, shares outstanding (in shares) | 65,522,585 | 65,379,359
Series H Preferred Interest [Member] |  |
Preferred stock, stated interest percentage | 7.125% | 7.125%
Essex Portfolio, L.P. [Member] | Series H Preferred Interest [Member] |  |
Preferred interest, liquidation value | $ 0 | $ 73,750
Preferred stock, stated interest percentage | 7.125% | 7.125%
Essex Portfolio, L.P. [Member] | General Partner [Member] |  |
Common stock, shares issued (in shares) | 65,522,585 | 65,379,359
Common stock, shares outstanding (in shares) | 65,522,585 | 65,379,359
Essex Portfolio, L.P. [Member] | Limited Partners [Member] |  |
Common stock, shares issued (in shares) | 2,219,268 | 2,214,545
Common stock, shares outstanding (in shares) | 2,219,268 | 2,214,545

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