CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Stockholders' Equity	Non- controlling Interests
Beginning Balance at Dec. 31, 2010	$ 24,125	$ 20	$ 3	$ 13,789		$ (2,578)	$ 11,234	$ 12,891
Beginning Balance (in shares) at Dec. 31, 2010		1,966,376	327,499
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			4,296,134
Issuance of common stock	42,754		44	42,710			42,754
Common stock offering costs, commissions and dealer manager fees net of reimbursements	(9,340)			(9,340)			(9,340)
Common stock issued through distribution reinvestment plan (in shares)			44,117
Common stock issued through distribution reinvestment plan	419			419			419
Common stock repurchases			(2,538)
Common stock redemptions	(25)			(25)			(25)
Preferred stock converted to common stock (in shares)		(1,966,376)	1,966,376
Preferred stock converted to common stock		(20)	20
Share-based compensation (in shares)			27,315
Share-based compensation	218			218			218
Contributions from Advisor	15			15			15
Distributions to non-controlling interests	(909)							(909)
Distributions declared	(2,600)					(2,600)	(2,600)
Other comprehensive income	(201)				(201)		(201)
Basic net income (loss) attributable to stockholders	(3,419)					(3,419)	(3,419)
Net Income (Loss) Attributable to Noncontrolling Interest	154							154
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(3,265)
Ending Balance at Dec. 31, 2011	51,191		67	47,786	(201)	(8,597)	39,055	12,136
Ending Balance (in shares) at Dec. 31, 2011			6,658,903
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			12,985,794
Issuance of common stock	128,877		130	128,747			128,877
Common stock offering costs, commissions and dealer manager fees net of reimbursements	(13,027)			(13,027)			(13,027)
Common stock issued through distribution reinvestment plan (in shares)			343,069
Common stock issued through distribution reinvestment plan	3,258		3	3,255			3,258
Common stock repurchases			(81,661)
Common stock redemptions	(781)		(1)	(780)			(781)
Share-based compensation (in shares)			24,667
Share-based compensation	180			180			180
Increase in interest in Bleecker Street	(12,000)			(1,189)			(1,189)	(10,811)
Non-controlling interests issued	480							480
Distributions to non-controlling interests	(481)							(481)
Distributions declared	(7,402)					(7,402)	(7,402)
Other comprehensive income	(1,492)				(1,492)		(1,492)
Basic net income (loss) attributable to stockholders	(6,339)					(6,339)	(6,339)
Net Income (Loss) Attributable to Noncontrolling Interest	(33)							(33)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(6,372)
Ending Balance at Dec. 31, 2012	142,431		199	164,972	(1,693)	(22,338)	141,140	1,291
Ending Balance (in shares) at Dec. 31, 2012			19,930,772
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			152,371,933
Issuance of common stock	1,502,527		1,524	1,501,003			1,502,527
Common stock offering costs, commissions and dealer manager fees net of reimbursements	(149,210)			(149,210)			(149,210)
Common stock issued through distribution reinvestment plan (in shares)			1,984,370
Common stock issued through distribution reinvestment plan	18,852		20	18,832			18,852
Common stock repurchases			(195,395)
Common stock redemptions	1,886		(2)	(1,884)			1,886
Share-based compensation (in shares)			28,728
Share-based compensation	232		0	232			232
Increase in interest in Bleecker Street	(1,000)			(247)			(247)	(753)
Distributions to non-controlling interests	(65)							(65)
Distributions declared	(44,391)					(44,391)	(44,391)
Other comprehensive income	1,080				1,080		1,080
Basic net income (loss) attributable to stockholders	(19,279)					(19,279)	(19,279)
Net Income (Loss) Attributable to Noncontrolling Interest	(32)							(32)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(19,311)
Ending Balance at Dec. 31, 2013	$ 1,449,259		$ 1,741	$ 1,533,698	$ (613)	$ (86,008)	$ 1,448,818	$ 441
Ending Balance (in shares) at Dec. 31, 2013			174,120,408