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Real Estate Investments - Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Earnings (loss) per common share from continuing operations: |  |  |  |  |  |  |  |  |  |  |
Continuing operations (USD per share) |  |  |  |  |  |  |  |  | $ (0.21) | $ (0.01) | $ 0.20
Continuing operations (USD per share) |  |  |  |  |  |  |  |  | (0.21) | (0.01) | 0.20
Earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |
Basic -- as reported | $ (0.37) | $ 0.10 | $ 0.01 | $ 0.04 | $ (0.02) | $ 0.04 | $ 0 | $ (0.03) | (0.21) | 0 | 0.23
Diluted -- as reported | $ (0.37) | $ 0.10 | $ 0.01 | $ 0.04 | $ (0.02) | $ 0.04 | $ 0 | $ (0.03) | $ (0.21) | $ 0 | $ 0.23
Broadmoor Austin Associates [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Pro forma revenue |  |  |  |  |  |  |  |  | $ 612,649 | $ 618,119 |
Pro forma income (loss) from continuing operations |  |  |  |  |  |  |  |  | (36,704) | (7,371) |
Pro forma net income (loss) available to common shareholders |  |  |  |  |  |  |  |  | $ (43,594) | $ (13,669) |
Earnings (loss) per common share from continuing operations: |  |  |  |  |  |  |  |  |  |  |
Continuing operations (USD per share) |  |  |  |  |  |  |  |  | $ (0.17) | $ 0.04 |
Basic -- as pro forma |  |  |  |  |  |  |  |  | (0.21) | (0.04) |
Continuing operations (USD per share) |  |  |  |  |  |  |  |  | (0.17) | 0.04 |
Diluted -- as pro forma |  |  |  |  |  |  |  |  | (0.21) | (0.04) |
Earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |
Basic -- as reported |  |  |  |  |  |  |  |  | (0.21) |  |
Basic -- as pro forma |  |  |  |  |  |  |  |  | (0.24) | (0.08) |
Diluted -- as reported |  |  |  |  |  |  |  |  | (0.21) |  |
Diluted -- as pro forma |  |  |  |  |  |  |  |  | $ (0.24) | $ (0.08) |

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