Income Taxes and Distributions (Details)	9 Months Ended
	Sep. 30, 2017
Additional Income Taxes and Distributions (Textuals) [Abstract]
Percentage of taxable income to be distributed to stockholders for federal tax purposes	90.00%
Percentage of capital gains excluded from taxable income distributed to shareholders	100.00%
Percentage of federal excise tax on real estate investment trusts that do not distribute income.	4.00%