Stock-Based Compensation Plans - Additional Information 1 (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation plan	$ 765,000	$ 1,900,000	$ (2,000,000)	$ (5,700,000)
Shares held in rabbi trust total	266,000	813,000	266,000	813,000
Vested shares held in rabbi trust	258,000	778,000	258,000	778,000
Interest and dividends	$ 281,000	$ 261,000	$ 617,000	$ 739,000
Mark-to-market gain (loss)	$ 3,400,000	$ 3,200,000	$ 6,700,000	$ 8,100,000