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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |
Stock issued in connection with stock grants (in shares) |  |  | 157,779 | 113,822 |
Common stock issued through the dividend reinvestment plan (in shares) |  |  | 1,608 | 1,868 |
Common stock issued through the dividend reinvestment plan |  |  | $ 275,000 | $ 250,000 |
Number of shares withheld to satisfy employees' tax withholding and other liabilities |  |  | 39,800 | 53,983 |
Shares withheld to satisfy employees' tax withholding and other liabilities, value |  |  | $ 5,921,000 | $ 4,701,000 |
Net operating real estate | $ 13,694,690,000 |  | 13,694,690,000 |  | $ 13,219,140,000
Dividends declared but not paid | 171,098,000 | $ 153,125,000 | 171,098,000 | 153,125,000 | $ 153,207,000
(Decrease) increase in redeemable noncontrolling interests |  |  | (1,722,000) | 4,088,000 |
Cash flow hedge losses reclassified to earnings | 1,342,000 | $ 1,546,000 | $ 4,334,000 | 4,557,000 |
Noncontrolling Interest, Decrease from Deconsolidation |  |  |  | $ 17,816,000 |
Restricted stock |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |
Conversion of restricted stock units (in shares) |  |  | 95,826 | 16,209 |
Restricted stock granted (in shares) |  |  | 61,953 | 97,613 |
Fair value of shares issued |  |  | $ 10,721,000 | $ 12,605,000 |
Stock Issued During Period, Shares, Share-based Compensation, Forfeited |  |  |  | 200 |
Stock Issued During Period, Value, Share-based Compensation, Forfeited |  |  |  | $ 1,826,000 |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |
Restricted stock granted (in shares) |  |  | 82,812 |  |
Stock Issued During Period, Shares, Share-based Compensation, Forfeited |  |  | 4,293 |  |
Stock Issued During Period, Value, Share-based Compensation, Forfeited |  |  | $ 502,000 |  |
Avalon at Edgewater [Member] |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |
Net operating real estate | $ 21,844,000 |  | $ 21,844,000 |  |
Deferred Compensation, Share-based Payments [Member] | Non Employee Director [Member] |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |
Conversion of restricted stock units (in shares) |  |  | 46,589 |  |
Fair value of shares issued |  |  | $ 3,552,000 |  |

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