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Earnings Per Share - Calculation of Fully Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fully diluted earnings (loss) per share
Net income (loss) available to common stockholders	$ 14,314	$ 61,868
Allocations of net income (loss) to limited partnership interests, net of tax	5,945	28,897
Net income (loss) for fully diluted shares	$ 20,259	$ 90,765
Weighted-average shares:
Common stock outstanding	358,001	338,403
Partnership units	178,393	176,072
RSUs (Treasury stock method)	708	179
Other	1,340	1,412
Fully diluted weighted-average shares of common stock outstanding	538,442	516,066
Fully diluted earnings (loss) per share	$ 0.04	$ 0.18

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