CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Thousands	Total	Class A Common Shares [Member]	Class B Common Shares [Member]	Class C Common Shares [Member]	Series A Preferred Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Non-Controlling Interest [Member]
Beginning balance at Jul. 07, 2015	$ 1,635,957	$ 246	$ 16	$ 68		$ 923,636		$ 711,991
Beginning balance, shares at Jul. 07, 2015		24,584,000	1,589,000	6,790,000
Net loss	(38,803)						$ (22,338)	(16,465)
Offering related costs	(126)					(70)		(56)
Dividends and distributions declared	(27,895)						(15,807)	(12,088)
Vesting of restricted share units, shares		217,000
Vesting of restricted share units		$ 2				(2)
Stock-based compensation	944					944
Stock issued in conversion of securities		$ 0
Stock issued in conversion securities, shares		17,450
Stock sold in conversion of securities, shares				(17,000)
Stock sold in conversion of securities				$ 0
Ending balance at Dec. 31, 2015	1,570,077	$ 248	$ 16	$ 68		924,508	(38,145)	683,382
Ending balance, shares at Dec. 31, 2015		24,818,000	1,589,000	6,773,000
Net loss	(91,009)						(51,558)	(39,451)
Dividends and distributions declared	(55,812)						(31,635)	(24,177)
Vesting of restricted share units, shares		7,000
Vesting of restricted share units	(13)	$ 0				(13)
Stock-based compensation	1,068					1,068
Stock issued in conversion of securities		$ 10
Stock issued in conversion securities, shares		1,018,500
Stock sold in conversion of securities, shares				(1,018,000)
Stock sold in conversion of securities				$ (10)
Ending balance at Dec. 31, 2016	1,424,311	$ 258	$ 16	$ 58		925,563	(121,338)	619,754
Ending balance, shares at Dec. 31, 2016		25,843,251	1,589,020	5,754,685
Net loss	(120,813)						(73,754)	(47,059)
Dividends and distributions declared	(56,117)						(34,668)	(21,449)
Vesting of restricted share units, shares		11,000
Vesting of restricted share units	(13)					(13)
Stock-based compensation	7,018					7,018
Issuance of restricted shares	66,474				$ 28	66,446
Issuance of restricted shares, shares					2,800,000
Stock issued in conversion of securities		$ 27
Stock issued in conversion securities, shares		2,603,554
Stock sold in conversion of securities, shares				(2,604,000)
Stock sold in conversion of securities				$ (27)
Share class surrenders			$ (3)			3
Share class surrenders, shares			(260,000)
OP Unit exchanges		$ 39				117,043		(117,082)
OP Unit exchanges, shares		3,958,182
Ending balance at Dec. 31, 2017	$ 1,320,860	$ 324	$ 13	$ 31	$ 28	$ 1,116,060	$ (229,760)	$ 434,164
Ending balance, shares at Dec. 31, 2017		32,415,734	1,328,866	3,151,131	2,800,000