Earnings Per Share ("EPS") (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator
Net (loss) income									$ (245,462)	$ 102,554	$ 68,972
Net (loss) income attributable to noncontrolling interests									15,259	(5,734)	(8,952)
Net (loss) income attributable to the Company	$ (190,418)	$ (22,191)	$ (25,116)	$ 7,522	$ 26,891	$ 46,371	$ 15,734	$ 7,824	(230,203)	96,820	60,020
Allocation of earnings to participating securities									(1,048)	(1,190)	(1,106)
Numerator for basic and diluted EPS—net (loss) income attributable to common stockholders									$ (231,251)	$ 95,630	$ 58,914
Denominator
Denominator for basic EPS—weighted average number of common shares outstanding (in shares)									146,232,000	141,340,000	141,142,000
Effect of dilutive securities
Share and unit based compensation (in shares)									0	0	2,000
Denominator for diluted EPS—weighted average number of common shares outstanding (in shares)									146,232,000	141,340,000	141,144,000
EPS—net (loss) income attributable to common stockholders:
Basic (in dollars per share)	$ (1.27)	$ (0.15)	$ (0.18)	$ 0.05	$ 0.19	$ 0.33	$ 0.11	$ 0.05	$ (1.58)	$ 0.68	$ 0.42
Diluted (in dollars per share)	$ (1.27)	$ (0.15)	$ (0.18)	$ 0.05	$ 0.19	$ 0.33	$ 0.11	$ 0.05	$ (1.58)	$ 0.68	$ 0.42
Convertible preferred units
Antidilutive securities
Antidilutive securities (in shares)									97,926	90,619	90,619
Partnership unit
Antidilutive securities
Antidilutive securities (in shares)									10,688,179	10,415,291	10,360,390