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Condensed Consolidated Statements Of Equity - USD ($) $ in Thousands | Total | Common shares of beneficial interest | Additional paid-in capital | Distributions in excess of net income | Treasury shares, at cost | Accumulated other comprehensive loss | Non-controlling interests
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2014 | $ 2,888,409 | $ 976 | $ 3,667,448 | $ (453,777) | $ (396,626) | $ (2,419) | $ 72,807
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net Income | 158,266 |  |  | 151,678 |  |  | 6,588
Other comprehensive income | 74 |  |  |  |  | 74 |
Net share awards | 11,374 |  | 2,169 |  | 9,205 |  |
Employee share purchase plan | 528 |  | 279 |  | 249 |  |
Common share options exercised | 176 |  | 176 |  |  |  |
Change in classification of deferred compensation plan | (4,678) |  | (4,678) |  |  |  |
Change in redemption value of non-qualified share awards | 1 |  |  | 1 |  |  |
Diversification of share awards within deferred compensation plan | 3,020 |  | 1,668 | 1,352 |  |  |
Conversions of operating partnership units | 0 |  | 16 |  |  |  | (16)
Cash distributions declared to equity holders | (128,524) |  |  | (125,868) |  |  | (2,656)
Purchase of non-controlling interests | (9,500) |  | (9,480) |  |  |  | (20)
Other | (61) |  | (61) |  |  |  |
Ending balance at Jun. 30, 2015 | 2,919,085 | 976 | 3,657,537 | (426,614) | (387,172) | (2,345) | 76,703
Beginning balance at Dec. 31, 2014 | 2,888,409 | 976 | 3,667,448 | (453,777) | (396,626) | (2,419) | 72,807
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Diversification of share awards within deferred compensation plan | 3,600 |  |  |  |  |  |
Ending balance at Dec. 31, 2015 | 2,892,896 | 976 | 3,662,864 | (458,577) | (386,793) | (1,913) | 76,339
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net Income | 492,725 |  |  | 488,032 |  |  | 4,693
Other comprehensive income | 65 |  |  |  |  | 65 |
Net share awards | 13,201 |  | 3,519 |  | 9,682 |  |
Employee share purchase plan | 1,223 |  | 682 |  | 541 |  |
Common share options exercised | 3,572 |  | 916 |  | 2,656 |  |
Change in classification of deferred compensation plan | (6,688) |  | (6,688) |  |  |  |
Change in redemption value of non-qualified share awards | (11,445) |  |  | (11,445) |  |  |
Diversification of share awards within deferred compensation plan | 25,017 |  | 11,701 | 13,316 |  |  |
Conversions of operating partnership units | 0 |  | 255 |  |  |  | (255)
Cash distributions declared to equity holders | (138,166) |  |  | (135,330) |  |  | (2,836)
Other | (10) | 2 | (12) |  |  |  |
Ending balance at Jun. 30, 2016 | $ 3,272,390 | $ 978 | $ 3,673,237 | $ (104,004) | $ (373,914) | $ (1,848) | $ 77,941

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