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Income Taxes - (Textual) (Details) - USD ($) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016
Income Tax Disclosure [Abstract] |  |  |
Minimum percentage of gross income derived from qualifying sources to qualify as REIT | 95.00% |  |
Minimum percentage of taxable income distribution to stockholders to qualify as REIT | 90.00% |  |
Subsequent period during which entity would be disqualified as a REIT if during any tax year entity fails to qualify as a REIT | 4 years |  |
Deferred tax asset recognized | $ 1,000,000 |  | $ 0
Accruals for tax uncertainties | $ 0 | $ 0 |

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