- Earnings Per Share (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
BASIC
Net income attributable to common shareholders	$ 102,712	$ 40,285	$ 17,254	$ 16,536	$ 83,574	$ 141,560	$ 21,721	$ 26,405	$ 176,788	$ 273,225	$ 220,838
Weighted-average common shares outstanding - basic (in shares)									266,914,843	237,642,048	236,666,375
Net income attributable to common shareholders - basic (usd per share)	$ 0.37	$ 0.15	$ 0.07	$ 0.07	$ 0.34	$ 0.60	$ 0.09	$ 0.11	$ 0.66	$ 1.15	$ 0.93
DILUTED:
Impact of assumed conversions									$ 0	$ 0	$ 2,528
Net income attributable to common shareholders									$ 176,788	$ 273,225	$ 223,366
Weighted-average common shares outstanding - basic (in shares)									266,914,843	237,642,048	236,666,375
Effect of dilutive securities:
Unvested share-based payment awards and options (in shares)									1,267,709	292,467	528,495
Operating Partnership Units (in shares)									0	0	3,616,120
Weighted-average common shares outstanding (in shares)									268,182,552	237,934,515	240,810,990
Net income attributable to common shareholders - per common share diluted (usd per share)	$ 0.37	$ 0.15	$ 0.06	$ 0.06	$ 0.33	$ 0.59	$ 0.09	$ 0.11	$ 0.66	$ 1.15	$ 0.93