Beneficiaries Equity of the Parent Company - Number of Shares and Net Income Used to Calculate Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator
Net income	$ 974	$ (175)	$ 6,964	$ 276,133	$ 4,020	$ 8,087	$ 7,763	$ 288,240
Net income attributable to noncontrolling interests	(7)			(1,612)			(42)	(1,701)
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(91)			(93)			(331)	(317)
Net income attributable to noncontrolling interests, Diluted	(7)			(1,612)			(42)	(1,701)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	(91)			(93)			(331)	(317)
Net income attributable to common shareholders, basic	876			274,428			7,390	286,222
Net income attributable to common shareholders, diluted	$ 876			$ 274,428			$ 7,390	$ 286,222
Denominator
Basic weighted average shares outstanding (in shares)	170,907,018			170,573,028			170,794,585	172,380,410
Contingent securities/Share based compensation (in shares)	1,330,176			453,464			1,283,365	355,026
Diluted weighted average shares outstanding (in shares)	172,237,194			171,026,492			172,077,950	172,735,436
Earnings per Common Share:
Net income attributable to common shareholders, Basic (USD per share)	$ 0.01			$ 1.61			$ 0.04	$ 1.66
Net income attributable to common shareholders, Diluted (USD per share)	$ 0.01			$ 1.60			$ 0.04	$ 1.66