Income Taxes and Distributions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Per Share
Ordinary income	$ 1.8117	$ 2.5067	$ 1.9134
Qualified dividend	0.0038	0.0047	0.0529
Return of capital	0.0929	0.0573	0.0503
Long- term capital gain	1.575	0.4593	0.9352
Uncaptured section of 1250 gains	0.3557	0.412	0.3482
Totals	$ 3.48	$ 3.44	$ 3.3