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Selected Quarterly Financial Data (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (unaudited) | The following is a summary of our unaudited quarterly results of operations for 2018 and 2017:
| 2018
| First |  | Second |  | Third |  | Fourth
| Quarter |  | Quarter |  | Quarter |  | Quarter
Revenues | $ | 275,770 |  |  | $ | 277,202 |  |  | $ | 278,969 |  |  | $ | 285,222 |
Net income (loss) attributable to common shareholders | $ | 236,022 |  |  | $ | 123,587 |  |  | $ | 45,805 |  |  | $ | (118,543 | )
Per share data (basic and diluted): |  |  |  |  |  |  |
Net income (loss) attributable to common shareholders | $ | 0.99 |  |  | $ | 0.52 |  |  | $ | 0.19 |  |  | $ | (0.50 | )
Common distributions declared | $ | 0.39 |  |  | $ | 0.39 |  |  | $ | 0.39 |  |  | $ | 0.39 |
| 2017
| First |  | Second |  | Third |  | Fourth
| Quarter |  | Quarter |  | Quarter |  | Quarter
Revenues | $ | 264,521 |  |  | $ | 264,992 |  |  | $ | 266,673 |  |  | $ | 278,543 |
Net income attributable to common shareholders | $ | 32,155 |  |  | $ | 16,042 |  |  | $ | 34,414 |  |  | $ | 65,000 |
Per share data (basic and diluted): |  |  |  |  |  |  |
Net income attributable to common shareholders | $ | 0.14 |  |  | $ | 0.07 |  |  | $ | 0.14 |  |  | $ | 0.27 |
Common distributions declared | $ | 0.39 |  |  | $ | 0.39 |  |  | $ | 0.39 |  |  | $ | 0.39 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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