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Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	May 03, 2024	Mar. 29, 2024	Aug. 06, 2021
Stockholders Equity Note [Line Items]
Net proceeds from the sale of Common stock				$ 0	$ 281,784
Shares withheld as payment for tax withholdings related to share based compensation, market value				3,657	$ 2,847
2021 ATM Program [Member]
Stockholders Equity Note [Line Items]
Net proceeds from the sale of Common stock			$ 281,784
Maximum aggregate offering amount of stock								$ 300,000
Cumulative value of Common Stock sold under the 2021 ATM Program			298,455
Direct costs			$ 33
Number of shares sold and issued under ATM			712,000
2024 ATM Program [Member]
Stockholders Equity Note [Line Items]
Maximum aggregate offering amount of stock						$ 400,000
Available for sale under ATM Program	$ 400,000			$ 400,000
Dividend Reinvestment Plan [Member]
Stockholders Equity Note [Line Items]
Authorized shares of each of Common and Class B available for issuance under the Dividend Reinvestment Plan							300,000
Stock issued during period, shares, dividend reinvestment plan	17,256	13,394		47,751	13,398
Common and Class B Common Stock [Member] \| Restricted Stock [Member]
Stockholders Equity Note [Line Items]
Shares withheld as payment for tax withholdings related to share based compensation, shares		3,454			6,159
Shares withheld as payment for tax withholdings related to share based compensation, market value		$ 1,638			$ 2,787
Class B Common Stock [Member] \| Restricted Stock [Member]
Stockholders Equity Note [Line Items]
Shares withheld as payment for tax withholdings related to share based compensation, shares	9,086			9,086
Shares withheld as payment for tax withholdings related to share based compensation, market value	$ 3,657			$ 3,657
Common Stock [Member]
Stockholders Equity Note [Line Items]
Cash dividends paid per share of common stock	$ 3	$ 2.7		$ 8.7	$ 7.85
Common Stock [Member] \| Stock Option [Member]
Stockholders Equity Note [Line Items]
Shares withheld as payment for tax withholdings related to share based compensation, shares				2,232	3,999
Shares withheld as payment for tax withholdings related to share based compensation, market value				$ 1,067	$ 1,860
Cash received from the exercise of stock options	$ 4,903	$ 6,097		17,763	22,049
Common Stock [Member] \| Employee Stock Purchase Plan [Member]
Stockholders Equity Note [Line Items]
Net proceeds from shares purchased under ESPP	$ 666	$ 583		$ 1,899	$ 1,734