CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified		Total		Preferred Stock [Member]	Common Stock [Member]		Additional Paid-in Capital [Member]		Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Parent [Member]		Non-Controlling Interests [Member]	Total Equity [Member]		Convertible Preferred Stock [Member] Preferred Stock [Member]		Convertible Preferred Stock [Member] Additional Paid-in Capital [Member]	Convertible Preferred Stock [Member] Parent [Member]	Convertible Preferred Stock [Member] Total Equity [Member]	Convertible Preferred Stock Series A and B [Member] Preferred Stock [Member]	Convertible Preferred Stock Series A and B [Member] Common Stock [Member]	Convertible Preferred Series C Stock [Member] Common Stock [Member]	Convertible Preferred Series C Stock [Member] Additional Paid-in Capital [Member]	Convertible Preferred Series C Stock [Member] Parent [Member]	Convertible Preferred Series C Stock [Member] Total Equity [Member]
Balance at Dec. 31, 2010							$ 200				$ 200			$ 200
Balance (in shares) at Dec. 31, 2010					20,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		7,147,034	[1],[2]		16,929,184
Issuance of common stock					170		185,957				186,127			186,127
Offering costs, commissions and dealer manager fees	[3]						(21,752)				(21,752)			(21,752)
Common stock issued through distribution reinvestment plan (in shares)					27,169
Common stock issued through distribution reinvestment plan							271				271			271
Common stock repurchases							(25)				(25)			(25)
Share-based compensation (in shares)					185,663
Equity-based compensation					2		223				225			225
Distributions declared										(2,519)	(2,519)			(2,519)
Contribution transactions							(16,769)				(16,769)			(16,769)
OP Units issued to acquire real estate investment		0
Contributions from non-controlling interest holders							(3,875)				(3,875)		3,875
Distributions to non-controlling interest holders													(68)	(68)
Net loss		(4,804)								(4,699)	(4,699)		(105)	(4,804)
Other comprehensive income (loss)		0							(98)		(98)			(98)
Balance at Dec. 31, 2011					172		144,230		(98)	(7,218)	137,086		3,702	140,788
Balance (in shares) at Dec. 31, 2011					17,162,016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		3,737,500	[1],[4]		164,775,688	[5]										6,990,328	[5]
Issuance of common stock	[5]				1,648		1,911,126				1,912,774			1,912,774		70		8,992	9,062	9,062
Excess of ARCT IV Merger considerations over historical cost	[5]						(93,421)				(93,421)			(93,421)
Offering costs, commissions and dealer manager fees	[3],[5]						(218,431)				(218,431)			(218,431)
Common stock issued through distribution reinvestment plan (in shares)	[5]				2,686,141
Common stock issued through distribution reinvestment plan	[5]				27		27,109				27,136			27,136
Common stock repurchases (in shares)	[5]				(183,119)
Common stock repurchases	[5]				(2)		(1,951)				(1,953)			(1,953)
Share-based compensation (in shares)	[5]				112,950
Equity-based compensation	[5]				1		1,229				1,230			1,230
Distributions declared	[5]									(75,416)	(75,416)			(75,416)
OP Units issued to acquire real estate investment	[5]	(6,352)											6,352	6,352
Contributions from non-controlling interest holders	[5]												7,375	7,375
Distributions to non-controlling interest holders	[5]												(663)	(663)
Net loss	[5]	(42,237)								(41,652)	(41,652)		(585)	(42,237)
Other comprehensive income (loss)	[5]	(93)							(3,836)		(3,836)			(3,836)
Balance at Dec. 31, 2012	[5]	1,668,760		70	1,846		1,778,883		(3,934)	(124,286)	1,652,579		16,181	1,668,760
Balance (in shares) at Dec. 31, 2012	[5]			6,990,328	184,553,676
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		47,161,562	[1],[6]		78,215,719	[5]										36,037,691	[5]
Issuance of common stock	[5]				781		2,153,144				2,153,925			2,153,925		360			360	360
Excess of ARCT IV Merger considerations over historical cost	[5]						(558,089)				(558,089)			(558,089)
Offering costs, commissions and dealer manager fees	[3],[5]						(165,531)				(165,531)			(165,531)
Common stock issued through distribution reinvestment plan (in shares)	[5]				940,737
Common stock issued through distribution reinvestment plan	[5]				10		25,554				25,564			25,564
Common stock repurchases (in shares)		(600,000)			(28,319,972)	[5]
Common stock repurchases		(7,500)			(283)	[5]	(357,758)	[5]			(358,041)	[5]		(358,041)	[5]
Conversion of conventable securities in to common stock (in shares)	[5]				599,233																(828,472)	829,629	1,411,030
Conversion of conventable securities in to common stock	[5]				6		5,794				5,800		(5,800)	0							(8)	8	14	17,382	17,396	17,396
Share-based compensation (in shares)	[5]				1,004,673
Equity-based compensation	[5]				10		7,952				7,962		32,700	40,662
Equity component of convertible debt	[5]						28,559				28,559			28,559
Contribution from Former Manager	[5]						2,313				2,313			2,313
Consideration to Former Manager for internalization	[5]						2,704			(2,704)	0			0
Distributions declared	[5]									(259,468)	(259,468)			(259,468)
Issuance of OP Units to affiliate	[5]												107,771	107,771
OP Units issued to acquire real estate investment	[5],[7]	0
Contributions from non-controlling interest holders	[5]												30,861	30,861
Distributions to non-controlling interest holders	[5]												(9,014)	(9,014)
Non-controlling interests retained in CapLease Merger	[5]												567	567
Redemption of OP Units	[5]												(1,152)	(1,152)
Net loss	[5]	(507,815)								(491,499)	(491,499)		(16,316)	(507,815)
Other comprehensive income (loss)	[5]	119	[8],[9]						11,600		11,600			11,600
Balance at Dec. 31, 2013	[5]	$ 2,229,228		$ 422	$ 2,392		$ 2,940,907		$ 7,666	$ (877,957)	$ 2,073,430		$ 155,798	$ 2,229,228
Balance (in shares) at Dec. 31, 2013	[5]			42,199,547	239,234,725

[1] Excludes 140.7 million shares of common stock that were issued to the stockholders of ARCT III's common stock in conjunction with the ARCT III Merger.

[2] Excludes 9.8 million shares of common stock that were issued by ARCT III for gross proceeds of $102.2 million.

[3] Includes $159.4 million, $211.4 million and $14.3 million to affiliates for the years ended December 31, 2013, 2012 and 2011, respectively.

[4] Excludes 155.7 million and 5.4 million shares of common stock that were issued by ARCT III and ARCT IV, respectively, for gross proceeds of $1.6 billion and $255.0 million, respectively.

[5] For discussion on the restatement adjustments, see Note 2 - Restatement of Previously Issued Financial Statements.

[6] Excludes 31.0 million shares of common stock that were issued by ARCT IV for gross proceeds of $1.5 billion.

[7] Excludes 50 properties comprised of $66.1 million of net investments subject to direct financing leases.

[8] The statement of comprehensive loss was originally included within the consolidated statement of operations in the recasted filing, which applied the carryover basis of accounting to include the effects of the merger with ARCT IV; it is now presented as a standalone financial statement.

[9] This line item has been updated to unrealized gain (loss) on investment securities in the accompanying statements of comprehensive loss.