Net 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, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share Reconciliation [Abstract]
Net income		$ 237,578	$ 97,052	$ 28,704	$ 92,138	$ 334,630	$ 120,842
Participating earnings	[1]	(614)		(180)		(948)	(772)
Basic net income attributed to common shareholders		236,964		28,524		333,682	120,070
Reallocation of participating earnings	[1]	4		0		6	4
Diluted net income attributed to common shareholders		$ 236,968		$ 28,524		$ 333,688	$ 120,074
Net income per common share:
Basic		$ 0.99		$ 0.12		$ 1.4	$ 0.5
Diluted		$ 0.99		$ 0.12		$ 1.39	$ 0.49

[1] Restricted Stock Liability Awards (discussed in Note 9) 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.