Quarterly report [Sections 13 or 15(d)]

Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail)

v3.26.1
Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financial assets:    
Cash and due from banks $ 254,045 $ 212,841
Securities available for sale 835,725 880,624
Loans held for sale 4,932 7,403
Loans, net of allowance for credit losses 6,474,998 6,493,465
Accrued interest receivable 23,320 24,466
Financial liabilities:    
Noninterest-bearing deposits 2,030,743 2,015,212
Interest-bearing deposits 4,769,879 4,662,438
Borrowings and subordinated debentures 130,618 280,463
Accrued interest payable 30,592 34,783
Quoted Prices in Active Markets for Identical Assets | Fair Value    
Financial assets:    
Cash and due from banks 254,045 212,841
Securities available for sale 128,591 128,710
Loans held for sale 0 0
Loans, net of allowance for credit losses 0 0
Accrued interest receivable 23,320 24,466
Financial liabilities:    
Interest-bearing deposits 0 0
Borrowings and subordinated debentures 0 0
Accrued interest payable 30,592 34,783
Significant Observable Inputs with No Active Market with Identical Characteristics | Fair Value    
Financial assets:    
Cash and due from banks 0 0
Securities available for sale 707,134 751,914
Loans held for sale 5,179 7,715
Loans, net of allowance for credit losses 0 0
Accrued interest receivable 0 0
Financial liabilities:    
Interest-bearing deposits 0 0
Borrowings and subordinated debentures 0 149,761
Accrued interest payable 0 0
Significant Unobservable Inputs | Fair Value    
Financial assets:    
Cash and due from banks 0 0
Securities available for sale 0 0
Loans held for sale 0 0
Loans, net of allowance for credit losses 6,512,774 6,532,980
Accrued interest receivable 0 0
Financial liabilities:    
Interest-bearing deposits 4,769,082 4,664,018
Borrowings and subordinated debentures 138,545 137,296
Accrued interest payable $ 0 $ 0