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Income Taxes - Schedule of components of distributions made to common stockholders on a per share basis (Details) - $ / shares |  |  | 12 Months Ended
--- | --- | --- | ---
Nov. 12, 2015 | Oct. 30, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Dividends, dollars per share |  |  |  |  |
Ordinary income (in dollars per share) |  |  | $ 1.98 | $ 0.94 | $ 1.20
Capital gains (in dollars per share) |  |  | 0.51 | 3.24 | 3.64
Unrecaptured Section 1250 gain (in dollars per share) |  |  | 0.38 | 0.36 | 0.00
Return of capital (in dollars per share) |  |  | 0.00 | 0.00 | 0.00
Dividends paid for income tax purposes (in dollars per share) |  |  | $ 2.87 | $ 4.54 | $ 4.84
Dividends, percent |  |  |  |  |
Ordinary income (as a percent) |  |  | 69.00% | 20.80% | 24.80%
Capital gains (as a percent) |  |  | 17.80% | 71.40% | 75.20%
Unrecaptured Section 1250 gain (as a percent) |  |  | 13.20% | 7.80% | 0.00%
Return of capital (as a percent) |  |  | 0.00% | 0.00% | 0.00%
Dividends paid (as a percent) |  |  | 100.00% | 100.00% | 100.00%
Distributions paid, per share (in dollars per share) |  |  |  |  | $ 4.63
Dividends declared for common stock (in dollars per share) | $ 2.00 | $ 2.00 | $ 2.87 | $ 2.75 | 6.63
Cash deemed paid (in dollars per share) |  |  |  |  | $ 0.21

X
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- Definition Aggregate percentage of dividends paid during the period for each share of common stock outstanding. + References No definition available. + Details
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