Intangible Lease Liabilities, Net (Schedule of Intangible Lease Liabilities, Net) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Intangible Lease Liabilities, Net [Abstract]
Below-market leases, net of accumulated amortization of $13,607 and $10,721, respectively (with a weighted average remaining life of 17.3 years and 17.5 years, respectively)	$ 53,390	$ 55,406
Ground leasehold liabilities, net of accumulated amortization of $115 and $53, respectively (with a weighted average remaining life of 43.6 years and 44.1 years, respectively)	5,210	5,272
Total intangible lease liabilities, net	58,600	60,678
Below-market leases, accumulated amortization	$ 13,607	$ 10,721
Below-market leases, weighted average remaining life	17 years 3 months 18 days	17 years 6 months
Ground leasehold liabilities, accumulated amortization	$ 115	$ 53
Ground leasehold liabilities, weighted average remaining life	43 years 7 months 6 days	44 years 1 month 6 days
Intangible lease liabilities, weighted average remaining life	19 years 7 months 6 days	19 years 9 months 18 days