Condensed Consolidated Statement of Equity - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Class A common shares	Series D Convertible Units	Common Stock	Common Stock Class A common shares	Common Stock Class B common shares	Preferred shares	Additional paid-in capital	Additional paid-in capital Class A common shares	Additional paid-in capital Perpetual Preferred Shares	Accumulated deficit	Accumulated other comprehensive loss	Shareholders’ equity	Shareholders’ equity Class A common shares	Shareholders’ equity Perpetual Preferred Shares	Noncontrolling interest	Noncontrolling interest Class A common shares	Noncontrolling interest Series D Convertible Units
Beginning balances (in shares) at Dec. 31, 2015					207,235,510	635,075	17,060,000
Beginning balances at Dec. 31, 2015	$ 3,935,233				$ 2,072	$ 6	$ 171	$ 3,554,063			$ (296,865)	$ (102)	$ 3,259,345			$ 675,888
Increase (Decrease) in Stockholders' Equity
Share-based compensation	1,853							1,853					1,853
Common stock issued under share-based compensation plans, net of shares withheld for employee taxes (in shares)				123,628
Common stock issued under share-based compensation plans, net of shares withheld for employee taxes	1,547			$ 2				1,545					1,547
Issuance of Class A common shares and units in connection with the ARPI merger (in shares)				36,546,170
Issuance of Class A common shares and units in connection with the ARPI merger	530,460			$ 365				511,281					511,646			18,814
Issuance of perpetual preferred shares, net of offering costs of $15,996 (in shares)							19,950,000
Issuance of perpetual preferred shares, net of offering costs of $15,996	482,726						$ 199			$ 482,527					$ 482,726
Redemptions of Class A units (in shares)					40,632
Redemptions of Class A units		$ (291)							$ 540					$ 540			$ (831)
Repurchases of Class A common shares (in shares)					(6,215,656)
Repurchases of Class A common shares	(96,098)	$ (96,000)			$ (62)			(96,036)					(96,098)
Assumption of exchangeable senior notes	6,970							6,970					6,970
Conversion of Series E units to Series D units			$ 58,494															$ 58,494
Distributions to equity holders:
Preferred shares	(12,981)										(12,981)		(12,981)
Noncontrolling interests	(5,905)															(5,905)
Common shares	(24,038)										(24,038)		(24,038)
Net (loss) income	1,275										(1,800)		(1,800)			3,075
Total other comprehensive income	102											102	102
Ending balances (in shares) at Jun. 30, 2016					237,730,284	635,075	37,010,000
Ending balances at Jun. 30, 2016	$ 4,879,347				$ 2,377	$ 6	$ 370	$ 4,462,743			$ (335,684)	$ 0	$ 4,129,812			$ 749,535