CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Thousands	Total	Class A Common Shares [Member]	Class B Common Shares [Member]	Series A Preferred Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Non-Controlling Interest [Member]
Beginning balance at Dec. 31, 2018	$ 1,150,458	$ 357	$ 13	$ 28	$ 1,124,504	$ (344,132)	$ 369,688
Beginning balance, shares at Dec. 31, 2018		35,668,000	1,322,000	2,800,000
Net loss	(10,894)					(6,967)	(3,927)
Cumulative effect of accounting change	(1,286)					(1,286)
Common dividends and distributions declared	(14,026)					(8,996)	(5,030)
Preferred dividends declared	(1,225)					(1,225)
Vesting of restricted share units	(1,613)				(1,613)
Vesting of restricted share units, shares		(23,000)
Share-based compensation	1,566				1,566
Share-based compensation, shares		45,000
Ending balance at Mar. 31, 2019	1,122,980	$ 357	$ 13	$ 28	1,124,457	(362,606)	360,731
Ending balance, shares at Mar. 31, 2019		35,690,000	1,322,365	2,800,000
Beginning balance at Dec. 31, 2019	1,043,370	$ 369	$ 12	$ 28	1,149,721	(418,711)	311,951
Beginning balance, shares at Dec. 31, 2019		36,897,364	1,242,536	2,800,000
Net loss	(30,975)					(20,664)	(10,311)
Preferred dividends declared	(1,225)					(1,225)
Vesting of restricted share units		$ 1			(1)
Vesting of restricted share units, shares		75,000
Share-based compensation	1,198				1,198
Share class surrenders			$ (12)		12
Share class surrenders, shares			(1,243,000)
OP Unit exchanges		$ 16			26,623		(26,639)
OP Unit exchanges, shares		1,650,000
Ending balance at Mar. 31, 2020	$ 1,012,368	$ 386		$ 28	$ 1,177,553	$ (440,600)	$ 275,001
Ending balance, shares at Mar. 31, 2020		38,622,102	0	2,800,000