Income Taxes - Schedule of Dividends Per Share Held (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Amount
Ordinary income (dollars per share)	$ 0.51	$ 0.75	$ 0.45
Capital gains (dollars per share)	0.93	0.51	0.47
Qualified dividends (dollars per share)	0.00	0.02	0.13
Unrecaptured Section 1250 gain (dollars per share)	0.08	0.16	0.27
Total (dollars per share)	$ 1.52	$ 1.44	$ 1.32
Percentage
Ordinary income	33.40%	51.50%	34.20%
Capital gains	61.20%	35.70%	35.40%
Qualified dividends	0.00%	1.60%	9.90%
Unrecaptured Section 1250 gain	5.40%	11.20%	20.50%
Total	100.00%	100.00%	100.00%