Income Per Common Share - Computations of Basic and Diluted Income (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share Reconciliation [Abstract]
Net income		$ 28,704	$ 92,138	$ 30,231	$ 481,447	$ 120,842	$ 511,678
Participating earnings	[1]	(180)		(679)		(772)	(11,636)
Basic net income attributed to common shareholders		28,524		29,552		120,070	500,042
Reallocation of participating earnings	[1]	0		2		4	112
Diluted net income attributed to common shareholders		$ 28,524		$ 29,554		$ 120,074	$ 500,154
Net income per common share:
Basic		$ 0.12		$ 0.12		$ 0.5	$ 2.1
Diluted		$ 0.12		$ 0.12		$ 0.49	$ 2.07

[1] (a) Restricted Stock Liability Awards represent participating securities because they participate in non-forfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.