Related Party Transactions and Arrangements (Fees Paid in Connection With the Operations of the Company, Incurred, Forgiven and Payable) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Due to affiliates, net		$ 220		$ 220		$ 575
Financing coordination fees | Nonrecurring fees
Related Party Transaction [Line Items]
Due to affiliates, net		0		0		0
Asset management fees | Ongoing fees
Related Party Transaction [Line Items]
Due to affiliates, net	[1]	(48)		(48)		15
Transfer agent and other professional fees | Ongoing fees
Related Party Transaction [Line Items]
Due to affiliates, net		268		268		560
Property management and leasing fees | Ongoing fees
Related Party Transaction [Line Items]
Due to affiliates, net		0		0		0
Dividends on Class B units | Ongoing fees
Related Party Transaction [Line Items]
Due to affiliates, net		0		0		$ 0
Incurred
Related Party Transaction [Line Items]
Fees paid to related parties		3,371	$ 5,697	6,699	$ 6,371
Incurred | Financing coordination fees | Nonrecurring fees
Related Party Transaction [Line Items]
Fees paid to related parties		0	2,363	0	2,363
Incurred | Asset management fees | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties	[1]	3,101	2,274	6,245	2,274
Incurred | Transfer agent and other professional fees | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties		270	1,041	454	1,627
Incurred | Property management and leasing fees | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties		0	0	0	0
Incurred | Dividends on Class B units | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties		0	19	0	107
Forgiven
Related Party Transaction [Line Items]
Fees paid to related parties		683	413	1,219	787
Forgiven | Financing coordination fees | Nonrecurring fees
Related Party Transaction [Line Items]
Fees paid to related parties		0	0	0	0
Forgiven | Asset management fees | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties	[1]	0	0	0	0
Forgiven | Transfer agent and other professional fees | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties		0	0	0	0
Forgiven | Property management and leasing fees | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties		683	413	1,219	787
Forgiven | Dividends on Class B units | Ongoing fees
Related Party Transaction [Line Items]
Fees paid to related parties		$ 0	$ 0	$ 0	$ 0

[1] Prior to the Listing, the Company caused the OP to issue to the Advisor restricted performance based Class B units for asset management services, which vested as of the Listing.