Agreements and Transactions with Related Parties (Narratives) (Details) - USD ($)			6 Months Ended	12 Months Ended
	Jul. 14, 2015	Jul. 01, 2015	Jun. 30, 2015	Dec. 31, 2014	Mar. 31, 2015
Acquisitions and Disposition Fees
Preferred return by advisor			5.00%
Interest rate on unpaid deferred acquisition fees			5.00%
Asset Management Fees and Available Cash Distributions
Net asset value				$ 9.72
Percentage of asset management fees paid in cash			50.00%
Percentage of asset management fees paid in shares			50.00%
Common stock shares outstanding			333,426,101	328,480,839
Percentage of available cash distribution to advisor			10.00%
Personnel And Office Rent Reimbursement
Maximum personnel and overhead reimbursement, percentage			2.40%
Legal fee reimbursement rate			0.25%
Line of credit, maximum borrowing capacity					$ 75,000,000.0
Subsequent Event
Personnel And Office Rent Reimbursement
Notes payable related party	$ 15,000,000	$ 10,000,000
Interest rate on debt	1.10%	1.10%
Debt maturity date	Dec. 30, 2015	Dec. 30, 2015
Adjusted net income
Personnel And Office Rent Reimbursement
Percentage of operating expenses reimbursements			25.00%
Average invested assets
Personnel And Office Rent Reimbursement
Percentage of operating expenses reimbursements			2.00%
Long-term net lease
Acquisitions and Disposition Fees
Percentage of acquisition fees			4.50%
Long-term net lease | Average market value
Asset Management Fees and Available Cash Distributions
Percentage of asset management fees			0.50%
Long-term net lease | Current
Acquisitions and Disposition Fees
Percentage of acquisition fees			2.50%
Long-term net lease | Deferred
Acquisitions and Disposition Fees
Percentage of acquisition fees			2.00%
Minimum
Personnel And Office Rent Reimbursement
Debt maturity date			Jul. 31, 2015
Ownership interest, percentage			7.00%
Minimum | Average equity value
Asset Management Fees and Available Cash Distributions
Percentage of asset management fees			1.50%
Maximum
Personnel And Office Rent Reimbursement
Debt maturity date			Dec. 31, 2039
Ownership interest, percentage			97.00%
Maximum | Real estate commission
Acquisitions and Disposition Fees
Percentage of subordinated disposition fees			50.00%
Maximum | Average equity value
Asset Management Fees and Available Cash Distributions
Percentage of asset management fees			1.75%
Maximum | Contract sales price of investment
Acquisitions and Disposition Fees
Percentage of subordinated disposition fees			3.00%
Maximum | Non-long term net lease
Acquisitions and Disposition Fees
Percentage of acquisition fees			1.75%
Advisor
Asset Management Fees and Available Cash Distributions
Common stock shares outstanding			9,647,643
Percentage of total common stock outstanding held by related party			2.90%
2016
Personnel And Office Rent Reimbursement
Maximum personnel and overhead reimbursement, percentage			2.20%
Post 2016
Personnel And Office Rent Reimbursement
Maximum personnel and overhead reimbursement, percentage			2.00%