Earnings Per Share - Calculation of Basic Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic earnings (loss) per share:
Net income (loss) available to common stockholders	$ 43,091	$ 13,674
Basic weighted-average shares of common stock outstanding	374,318	358,001
Basic earnings (loss) per share	$ 0.12	$ 0.04