Related Party Transactions and Arrangements (General and Administrative Expenses) (Details) - Affiliates of Former Manager [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Related Party Transaction [Line Items]
General and administrative expenses	$ 0	$ 60	$ 0	$ 16,089
Advisory Fees And Reimbursements [Member]
Related Party Transaction [Line Items]
General and administrative expenses	0	60	0	2,015
Equity Awards [Member]
Related Party Transaction [Line Items]
General and administrative expenses	$ 0	$ 0	$ 0	$ 14,074