Related Party Transactions and Arrangements (Advisory fees and reimbursements) (Narrative) (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

Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.

No definition available.

Name:	us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration