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Significant Acquisitons (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) ft² shares | Sep. 30, 2016 shares | Jun. 30, 2016 shares | Mar. 31, 2016 shares | Dec. 31, 2015 shares | Sep. 30, 2015 shares | Jun. 30, 2015 shares | Mar. 31, 2015 shares | Dec. 31, 2016 USD ($) ft² property $ / shares shares | Dec. 31, 2015 USD ($) $ / shares shares | Dec. 31, 2014 shares
Significant Acquisitions |  |  |  |  |  |  |  |  |  |  |
Number of properties acquired | property |  |  |  |  |  |  |  |  | 3 |  |
Rentable square feet | ft² | 1,099,000 |  |  |  |  |  |  |  | 1,099,000 |  |
Aggregate purchase price |  |  |  |  |  |  |  |  | $ 282,000,000 |  |
Closing costs and adjustments | $ 9,000,000 |  |  |  |  |  |  |  | 9,000,000 |  |
Acquisition costs |  |  |  |  |  |  |  |  | 479,000 |  |
Estimated fair value of the assets acquired at the date of acquisition |  |  |  |  |  |  |  |  |  |  |
Real estate assets | 221,119,000 |  |  |  |  |  |  |  | 221,119,000 |  |
Value of acquired real estate leases | 54,299,000 |  |  |  |  |  |  |  | 54,299,000 |  |
Acquired unfavorable leases | (2,790,000) |  |  |  |  |  |  |  | (2,790,000) |  |
Total | $ 272,628,000 |  |  |  |  |  |  |  | 272,628,000 |  |
Pro forma operating results for the company and acquisitions |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 274,873,000 | $ 279,173,000 |
Income from continuing operations |  |  |  |  |  |  |  |  | 5,093,000 | 31,143,000 |
Net income |  |  |  |  |  |  |  |  | $ 5,093,000 | $ 31,143,000 |
Weighted average number of shares outstanding, basic and diluted (in shares) | shares | 107,231,000 | 103,709,000 | 100,187,000 | 100,187,000 | 100,187,000 | 100,187,000 | 100,187,000 | 100,187,000 | 102,843,000 | 100,187,000 | 100,187,000
Income from continuing operations per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.05 | $ 0.31 |
Net income per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.05 | $ 0.31 |
Revenue recognized due to the acquisitions |  |  |  |  |  |  |  |  | $ 10,500,000 |  |
Net income from operations recognized due to the acquisitions |  |  |  |  |  |  |  |  | $ (100,000) |  |
Minneapolis, MN |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions |  |  |  |  |  |  |  |  |  |  |
Number of properties acquired | property |  |  |  |  |  |  |  |  | 1 |  |
Atlanta, GA |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions |  |  |  |  |  |  |  |  |  |  |
Number of properties acquired | property |  |  |  |  |  |  |  |  | 1 |  |
Denver, CO |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions |  |  |  |  |  |  |  |  |  |  |
Number of properties acquired | property |  |  |  |  |  |  |  |  | 1 |  |

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