Related Party Transactions and Arrangements (Financing Fees and Reimbursements) (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Former Manager and Affiliates of Former Manager [Member] | Financing Consideration Fee [Member]
Related Party Transaction [Line Items]
Percentage of secured mortgage or refinancing available	0.75%
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Related party expenses	$ 203,558,000	$ 0	$ 0
Affiliated Entity [Member] | Financing Fees And Reimbursements [Member]
Related Party Transaction [Line Items]
Related party expenses	$ 0	$ 14,277,000	$ 3,350,000