CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Cumulative Common Distributions	Additional Paid in Capital	Cumulative Net Income Available for Common Shareholders	Cumulative Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2020		164,823,833
Beginning balance at Dec. 31, 2020	$ 2,102,790	$ 1,648	$ (5,628,746)	$ 4,550,385	$ 3,180,263	$ (760)
Increase (Decrease) in Shareholders' Equity
Net loss	(194,990)				(194,990)
Equity interest in investee’s unrealized gains	0
Common share grants	380			380
Distributions	(1,648)		(1,648)
Ending balance (in shares) at Mar. 31, 2021		164,823,833
Ending balance at Mar. 31, 2021	1,906,532	$ 1,648	(5,630,394)	4,550,765	2,985,273	(760)
Beginning balance (in shares) at Dec. 31, 2021		165,092,333
Beginning balance at Dec. 31, 2021	1,555,306	$ 1,651	(5,635,342)	4,552,558	2,635,660	779
Increase (Decrease) in Shareholders' Equity
Net loss	(119,822)				(119,822)
Equity interest in investee’s unrealized gains	4
Common share grants	462			462
Common share repurchases and forfeitures (in shares)		(800)
Distributions	(1,651)		(1,651)
Ending balance (in shares) at Mar. 31, 2022		165,091,533
Ending balance at Mar. 31, 2022	$ 1,434,299	$ 1,651	$ (5,636,993)	$ 4,553,020	$ 2,515,838	$ 783