Related Party Transactions and Arrangements (Investment in the Managed REITs) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Carrying Amount of Investment	$ 57,247		$ 57,247		$ 98,053
Net income (loss)			1,611	$ 247
Managed REITs [Member]
Related Party Transaction [Line Items]
Carrying Amount of Investment	3,579		3,579
Net income (loss)	$ (27)	$ 400	$ 63	$ (1,400)