International Activities - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
International Activities [Line Items]
Revenues from international trust-related services	$ 36,000	$ 38,000
Loans to foreign borrowers	129,638,832	91,443,226
Canada [Member]
International Activities [Line Items]
Deposits at foreign office	34,000	32,000
Geographic Distribution, Foreign [Member]
International Activities [Line Items]
Loans to foreign borrowers	$ 319,000	$ 197,000
Geographic Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Maximum [Member]
International Activities [Line Items]
Concentration risk percentage	1.00%

International Activities [Line Items]

No definition available.

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- Definition

Amount of revenues related to international trust related services, including wealth management services, offered internationally.

+ References

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

The aggregate of all foreign interest-bearing and noninterest-bearing deposit liabilities.

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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