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						9 Months Ended
		Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share Reconciliation [Abstract]
Net income		$ 144,307	$ 237,578	$ 97,052	$ 50,656	$ 28,704	$ 92,138	$ 478,937	$ 171,498
Participating earnings	[1]	(161)			(170)			(1,081)	(922)
Basic net income attributed to common shareholders		144,146			50,486			477,856	170,576
Reallocation of participating earnings	[1]	1			1			7	5
Diluted net income attributed to common shareholders		$ 144,147			$ 50,487			$ 477,863	$ 170,581
Net income per common share:
Basic		$ 0.61			$ 0.21			$ 2	$ 0.71
Diluted		$ 0.6			$ 0.21			$ 1.99	$ 0.7

[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.