Stock-Based Compensation Plans - Restricted Stock and Restricted Stock Units and Performance Awards Outstanding (Detail) - $ / shares		6 Months Ended		12 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance		1,473,805	1,736,688	1,736,688
Granted		1,267,971	1,608,170
Vested		(751,188)	(955,354)
Forfeited		(3,654)	(25,090)
Outstanding, Ending Balance		1,986,934	2,364,414	1,473,805
Outstanding, Beginning Balance, weighted average grant date fair value		$ 22.82	$ 14.44	$ 14.44
Granted, weighted average grant date fair value		30.41	25.01
Vested, weighted average grant date fair value		24.2	16.49
Forfeited, weighted average grant date fair value		25.82	17.64
Outstanding, Ending Balance, weighted average grant date fair value		$ 27.14	$ 20.77	$ 22.82
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance		93,116	379,633	379,633
Granted		13,442	18,732
Vested		(53,504)	(193,483)
Forfeited		0	0
Outstanding, Ending Balance		53,054	204,882	93,116
Outstanding, Beginning Balance, weighted average grant date fair value		$ 19.44	$ 14.71	$ 14.71
Granted, weighted average grant date fair value		32.85	24.86
Vested, weighted average grant date fair value		18.93	14.2
Forfeited, weighted average grant date fair value		0	0
Outstanding, Ending Balance, weighted average grant date fair value		$ 23.34	$ 16.11	$ 19.44
Stock-Based Performance Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	[1]	937,582	1,950,632	1,950,632
Granted	[1]	254,195	145,747
Vested	[1]	(526,918)	(1,158,797)
Forfeited	[1]	0	0
Outstanding, Ending Balance	[1]	664,859	937,582	937,582
Outstanding, Beginning Balance, weighted average grant date fair value		$ 17.01	$ 9.02	$ 9.02
Granted, weighted average grant date fair value		31.84	26.86
Vested, weighted average grant date fair value		10.99	4.8
Forfeited, weighted average grant date fair value		0	0
Outstanding, Ending Balance, weighted average grant date fair value		$ 27.45	$ 17.01	$ 17.01

[1] (a) Amounts granted reflect performance units initially granted. The actual payout will be between zero and 200% depending on achievement of either total stockholder return ranking compared to our peers over the performance period or on the achievement of internal performance targets.