Quarterly report [Sections 13 or 15(d)]

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

v3.26.3
Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Financial assets:    
Cash and due from banks $ 348,576 $ 212,841
Securities available for sale 869,499 880,624
Loans held for sale 31,242 7,403
Loans, net of allowance for credit losses 6,497,891 6,493,465
Accrued interest receivable 25,404 24,466
Derivative financial instruments 4,397 2,719
Financial liabilities:    
Noninterest-bearing deposits 2,146,060 2,015,212
Interest-bearing deposits 4,909,714 4,662,438
Borrowings and subordinated debentures 76,147 280,463
Accrued interest payable 28,131 34,783
Derivative financial instruments 3,138 2,568
Quoted Prices in Active Markets for Identical Assets | Fair Value    
Financial assets:    
Cash and due from banks 348,576 212,841
Securities available for sale 225,051 128,710
Loans held for sale 0 0
Loans, net of allowance for credit losses 0 0
Accrued interest receivable 25,404 24,466
Derivative financial instruments 0 0
Financial liabilities:    
Interest-bearing deposits 0 0
Borrowings and subordinated debentures 0 0
Accrued interest payable 28,131 34,783
Derivative financial instruments 0 0
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 644,448 751,914
Loans held for sale 31,506 7,715
Loans, net of allowance for credit losses 0 0
Accrued interest receivable 0 0
Derivative financial instruments 4,397 2,719
Financial liabilities:    
Interest-bearing deposits 0 0
Borrowings and subordinated debentures 0 149,761
Accrued interest payable 0 0
Derivative financial instruments 3,138 2,568
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 6,516,734 6,532,980
Accrued interest receivable 0 0
Derivative financial instruments 0 0
Financial liabilities:    
Interest-bearing deposits 4,901,854 4,664,018
Borrowings and subordinated debentures 76,402 137,296
Accrued interest payable 0 0
Derivative financial instruments $ 0 $ 0