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Stock Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 27, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	6 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit	$ 16.95
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit	$ 48.91
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used	Black-Scholes options pricing model	Black-Scholes options pricing model	Black-Scholes options pricing model
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	3.69%	4.39%	2.92%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	2.09%	2.44%	1.44%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years 8 months 12 days	5 years 9 months 21 days	6 years 7 days
Percentage of Option Vesting Rate	20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	31.65%	30.58%	28.72%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 9.96	$ 8.41	$ 13.3
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 2,338,000	$ 1,585,000	$ 9,131,000
Share-based Payment Arrangement, Expense	2,184,000	1,763,000	1,440,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 5,212,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 3 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 2,131,000	2,121,000	1,750,000
DIVIDENDS PAYABLE	25,753,000	25,712,000
Other Liabilities [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
DIVIDENDS PAYABLE	$ 141,000	124,000
Two Thousand Twenty One Omnibus Stock and Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	1,222,315			2,500,000
Two Thousand Twenty One Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of Option Vesting Rate	20.00%
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Measurement Amount In Assets	$ 50,000,000,000
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Measurement Amount In Assets	$ 10,000,000,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	2 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Percentage of Option Vesting Rate	20.00%
Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 4,025,000	$ 3,258,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 year 2 months 8 days
Restricted Stock Units [Member] \| Officers [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 2,021,000	$ 1,826,000	1,887,000
Restricted Stock Units [Member] \| Directors [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	729,000	667,000	631,000
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 2,276,000	$ 1,082,000	$ 1,861,000
Performance Shares [Member] \| Executives And Other Officers [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement , Award Requisite Service Period	3 years
Average adjusted earnings per share growth percentage	50.00%
Return on average assets	100.00%
Performance Shares [Member] \| Maximum [Member] \| Executives And Other Officers [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation, Number Of Shares Issued Upon Vesting Based On Core Return Percentage	200.00%
Performance Shares [Member] \| Minimum [Member] \| Executives And Other Officers [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation, Number Of Shares Issued Upon Vesting Based On Core Return Percentage	0.00%