Earnings per Share and Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share Basic [Line Items]
Income per common share - basic	$ 0.69	$ 0.07	$ 1.73	$ 0.04
Income per common share - diluted	$ 0.69	$ 0.07	$ 1.72	$ 0.04
Weighted Average Limited Partnership Units Outstanding, Basic	760,046	765,046	762,601	765,046
Continuing Operations | Parent Company [Member]
Earnings Per Share Basic [Line Items]
Income attributable to common stockholders - basic	$ 117,406	$ 12,688	$ 293,552	$ 6,402
Income attributable to common stockholders - diluted	$ 117,406	$ 12,688	$ 293,552	$ 6,402
Weighted average common shares/units outstanding for basic EPS/EPU	170,090,000	169,671,000	169,906,000	169,081,000
Weighted average common shares/units outstanding for diluted EPS/EPU	170,589,000	169,970,000	170,314,000	169,356,000
Income per common share - basic	$ 0.69	$ 0.07	$ 1.73	$ 0.04
Income per common share - diluted	$ 0.69	$ 0.07	$ 1.72	$ 0.04
Continuing Operations | Partnership Interest [Member]
Earnings Per Share Basic [Line Items]
Income attributable to common stockholders - basic	$ 117,925	$ 12,745	$ 294,867	$ 6,431
Income attributable to common stockholders - diluted	$ 117,925	$ 12,745	$ 294,867	$ 6,431
Weighted average common shares/units outstanding for basic EPS/EPU	170,850,000	170,436,000	170,668,000	169,846,000
Weighted average common shares/units outstanding for diluted EPS/EPU	171,349,000	170,735,000	171,076,000	170,121,000
Income per common share - basic	$ 0.69	$ 0.07	$ 1.73	$ 0.04
Income per common share - diluted	$ 0.69	$ 0.07	$ 1.72	$ 0.04