Summary of Significant Accounting Policies - Schedule of Revisions to Cash Flow Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2014	Jun. 30, 2014	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net Cash provided by (used in) Operating Activities	$ (18,542)	$ (3,232)	$ (9,648)	$ (9,693)	$ (3,647)	$ (418)
Net Cash provided by (used in) Investing Activities	(182,082)	(445,577)	(1,089,521)	(1,517,175)	(111,500)	(1,357)
Net Cash provided by (used in) Financing Activities	468,553	1,370,133	1,363,619	1,582,907	124,209	2,027
Additional non-cash financing activities:
Line of credit draws used directly to acquire investments in real estate	36,265	71,528	309,096	446,558	0	0
As originally reported
Net Cash provided by (used in) Operating Activities	(16,893)	(769)	352		(2,702)
Net Cash provided by (used in) Investing Activities	(219,996)	(519,568)	(1,408,617)		(112,445)
Net Cash provided by (used in) Financing Activities	504,818	1,441,661	1,672,715		124,209
Additional non-cash financing activities:
Line of credit draws used directly to acquire investments in real estate	0	0	0		0
Revisions | Rent Credits
Net Cash provided by (used in) Operating Activities	(1,649)	(2,463)	(10,000)		(945)
Net Cash provided by (used in) Investing Activities	1,649	2,463	10,000		945
Net Cash provided by (used in) Financing Activities	0	0	0		0
Additional non-cash financing activities:
Line of credit draws used directly to acquire investments in real estate	0	0	0		0
Revisions | Line of Credit Advances
Net Cash provided by (used in) Operating Activities	0	0	0		0
Net Cash provided by (used in) Investing Activities	36,265	71,528	309,096		0
Net Cash provided by (used in) Financing Activities	(36,265)	(71,528)	(309,096)		0
Additional non-cash financing activities:
Line of credit draws used directly to acquire investments in real estate	$ 36,265	$ 71,528	$ 309,096		$ 0