Summary Of Significant Accounting Policies (Income Taxes and Segments) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) segment property	Dec. 31, 2015 USD ($)
Accounting Policies [Abstract]
Minimum percentage of taxable income distributed to shareholders	90.00%
Material unrecognized tax benefits | $	$ 0	$ 0
Number of properties exceeding segment reporting threshold | property	0
Segment reporting threshold	10% of our revenues or property operating income
Number of segments | segment	1