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Loans and ACL - Summary of Amortized Cost of Collateral-Dependent Loans, Individually Evaluated for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	$ 54,226	$ 79,419
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	22,560	42,723
Real Estate [Member] | Construction, Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	115	116
Real Estate [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	25,250	26,994
Real Estate [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	$ 6,301	$ 9,586

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