Maximum period of time related to the accrual of interest on loans that have become past due.

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- Definition

The amount of increase or decrease in the allowance for loan and lease losses expressed as a percentage.

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No definition available.

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- Definition

Percentage of projection for house price index.

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Percentage of projection for house price index.

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- Definition

Percentage of projection for real disposable personal income.

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Projection of the growth rate of the real gross domestic product (GDP) based on a direct comparison of the GDP from one year to the next.

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- Definition

Percentage of unemployment rate.

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No definition available.

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Percentage points increase in unemployment rate.

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Percentage points reduction in gdp projection.

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- Definition

Represents an accrued liability that is appropriate to cover estimated credit losses on off-balance sheet loan commitments, standby letters of credit, and guarantees.

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No definition available.

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- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Jun. 30, 2026	Sep. 30, 2026	Dec. 31, 2025
Financing Receivable, Allowance for Credit Losses [Line Items]
Reserve for lending-related commitments	$ 40,067		$ 40,067	$ 35,075
Maximum Period Related To Accrual Of Interest On Discontinued Loans			90 days
Accrued interest receivable net of allowance for credit loss	$ 105,814		$ 105,814	109,232
Percentage Of Allowance For Loan And Lease Losses			1.13%
Allowance for Loan and Lease Losses, Period Increase (Decrease)			$ 3,372
2027 [member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage Points Increase In Unemployment Rate	4.10%
Percentage of projection for real GDP	2.40%
Percentage of projection for house price index	1.41%	0.70%
Percentage of projection for mortgage rate	6.59%	6.32%
Percentage of projection for real disposable personal income	2.48%	2.40%
2026 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage Points Increase In Unemployment Rate	4.30%
Percentage points reduction in gdp projection.	2.30%
Percentage of projection for real GDP	2.20%
Percentage of unemployment rate	4.10%
Percentage of projection for house price index	1.01%	0.67%
Percentage of projection for mortgage rate	6.56%	6.32%
Percentage of projection for real disposable personal income	0.43%	0.87%
Accrued Income Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Accrued interest receivable net of allowance for credit loss	$ 88,374		$ 88,374	$ 95,960