Earnings per Share and Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share Basic [Line Items]
Weighted average common shares/units outstanding for basic EPS/EPU	167,908,000	167,440,000
Weighted average common shares/units outstanding for diluted EPS/EPU	167,908,000	167,717,000
(Loss) income per common share – basic	$ (0.15)	$ 0.54
(Loss) income per common share – diluted	$ (0.15)	$ 0.54
Weighted Average Limited Partnership Units Outstanding, Basic	765,046	349,902
Partnership Interest [Member]
Earnings Per Share Basic [Line Items]
Weighted average common shares/units outstanding for basic EPS/EPU	168,673,000	167,790,000
Weighted average common shares/units outstanding for diluted EPS/EPU	168,673,000	168,067,000
(Loss) income per common unit – basic	$ (0.15)	$ 0.54
(Loss) income per common unit – diluted	$ (0.15)	$ 0.54
Continuing Operations [Member]
Earnings Per Share Basic [Line Items]
(Loss) income attributable to common stockholders - basic	$ (25,332)	$ 90,446
(Loss) income attributable to common stockholders - diluted	(25,332)	90,446
Continuing Operations [Member] | Partnership Interest [Member]
Earnings Per Share Basic [Line Items]
(Loss) income attributable to common stockholders - basic	(25,447)	90,636
(Loss) income attributable to common stockholders - diluted	$ (25,447)	$ 90,636