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Consolidated Statements of Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Total Stockholders' Equity | Noncontrolling interests
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2017 |  | 200,306,733 |  |  |  |
Beginning Balance at Dec. 31, 2017 | $ 1,833,645 | $ 2,003 | $ 2,061,451 | $ (229,809) | $ 1,833,645 | $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends per common share/unit | (25,259) |  | 111 | (25,370) | (25,259) |
Share-based compensation (in shares) |  | 25,309 |  |  |  |
Share-based compensation | 2,279 | $ 0 | 2,279 |  | 2,279 |
Net Income | 4,338 |  |  | 4,338 | 4,338 |
Sale of common stock (in shares) |  | 230,719 |  |  |  |
Sale of common stock | 2,746 | $ 3 | 2,743 |  | 2,746 |
Ending balance (in shares) at Mar. 31, 2018 |  | 200,562,761 |  |  |  |
Ending Balance at Mar. 31, 2018 | 1,817,749 | $ 2,006 | 2,066,584 | (250,841) | 1,817,749 | 0
Beginning balance (in shares) at Dec. 31, 2017 |  | 200,306,733 |  |  |  |
Beginning Balance at Dec. 31, 2017 | 1,833,645 | $ 2,003 | 2,061,451 | (229,809) | 1,833,645 | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net Income | 32,347 |  |  |  |  |
Ending balance (in shares) at Jun. 30, 2018 |  | 207,840,943 |  |  |  |
Ending Balance at Jun. 30, 2018 | 1,911,299 | $ 2,078 | 2,158,336 | (249,115) | 1,911,299 | 0
Beginning balance (in shares) at Mar. 31, 2018 |  | 200,562,761 |  |  |  |
Beginning Balance at Mar. 31, 2018 | 1,817,749 | $ 2,006 | 2,066,584 | (250,841) | 1,817,749 | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends per common share/unit | (26,165) |  | 118 | (26,283) | (26,165) |
Share-based compensation (in shares) |  | 35,955 |  |  |  |
Share-based compensation | 1,984 | $ 0 | 1,984 |  | 1,984 |
Net Income | 28,009 |  |  | 28,009 | 28,009 |
Sale of common stock (in shares) |  | 7,242,227 |  |  |  |
Sale of common stock | 89,722 | $ 72 | 89,650 |  | 89,722 |
Ending balance (in shares) at Jun. 30, 2018 |  | 207,840,943 |  |  |  |
Ending Balance at Jun. 30, 2018 | 1,911,299 | $ 2,078 | 2,158,336 | (249,115) | 1,911,299 | 0
Beginning balance (in shares) at Dec. 31, 2018 |  | 204,536,485 |  |  |  |
Beginning Balance at Dec. 31, 2018 | 1,890,593 | $ 2,045 | 2,126,472 | (245,620) | 1,882,897 | 7,696
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends per common share/unit | (25,504) |  | 113 | (25,483) | (25,370) | (134)
Share-based compensation (in shares) |  | 55,916 |  |  |  |
Share-based compensation | 1,157 | $ 1 | 1,073 |  | 1,074 | 83
Common stock repurchased and retired (in shares) |  | (3,143,922) |  |  |  |
Common stock repurchased and retired | (29,998) | $ (31) | (29,967) |  | (29,998) |
Net Income | 8,980 |  |  | 8,945 | 8,945 | 35
Ending balance (in shares) at Mar. 31, 2019 |  | 201,448,479 |  |  |  |
Ending Balance at Mar. 31, 2019 | 1,829,942 | $ 2,015 | 2,097,691 | (277,444) | 1,822,262 | 7,680
Beginning balance (in shares) at Dec. 31, 2018 |  | 204,536,485 |  |  |  |
Beginning Balance at Dec. 31, 2018 | $ 1,890,593 | $ 2,045 | 2,126,472 | (245,620) | 1,882,897 | 7,696
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Common stock repurchased and retired (in shares) | (4,148,511) |  |  |  |  |
Net Income | $ 38,054 |  |  |  |  |
Ending balance (in shares) at Jun. 30, 2019 |  | 200,477,286 |  |  |  |
Ending Balance at Jun. 30, 2019 | 1,825,810 | $ 2,005 | 2,089,745 | (273,849) | 1,817,901 | 7,909
Beginning balance (in shares) at Mar. 31, 2019 |  | 201,448,479 |  |  |  |
Beginning Balance at Mar. 31, 2019 | 1,829,942 | $ 2,015 | 2,097,691 | (277,444) | 1,822,262 | 7,680
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends per common share/unit | (25,379) |  | 120 | (25,365) | (25,245) | (134)
Share-based compensation (in shares) |  | 33,396 |  |  |  |
Share-based compensation | $ 2,205 | $ 1 | 1,955 |  | 1,956 | 249
Common stock repurchased and retired (in shares) | (1,004,589) | (1,004,589) |  |  |  |
Common stock repurchased and retired | $ (10,032) | $ (11) | (10,021) |  | (10,032) |
Net Income | 29,074 |  |  | 28,960 | 28,960 | 114
Ending balance (in shares) at Jun. 30, 2019 |  | 200,477,286 |  |  |  |
Ending Balance at Jun. 30, 2019 | $ 1,825,810 | $ 2,005 | $ 2,089,745 | $ (273,849) | $ 1,817,901 | $ 7,909

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