Earnings Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income/(loss)	$ 15,147	$ (8,638)
Less: Income distributed to participating securities	(558)	(555)
Less: Undistributed income allocable to participating securities	(1,152)
Net (loss)/income available to common stockholders – Basic EPS	$ 13,437	$ (9,193)
Weighted average common shares (in thousands)	145,649,000	152,519,000
Basic (loss)/earnings per share	$ 0.09	$ (0.06)
Net (loss)/income available to common stockholders	$ 13,437	$ (9,193)
Add back: Undistributed income allocable to participating securities	1,152
Less: Reallocation of undistributed income allocable to participating securities considered potentially dilutive	(1,152)
Net (loss)/income available to common stockholders – Diluted EPS	$ 13,437	$ (9,193)
Weighted average common shares	145,649,000	152,519,000
Dilutive effect of common stock equivalents, excluding participating securities	121,000	0
Weighted average diluted shares	145,770,000	152,519,000
Diluted earnings/(loss) per share	$ 0.09	$ (0.06)