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Fair Value Measurements - Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss $ 1,074,957 $ 928,935
Carrying Amount    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss 1,074,957 928,935
Investments, Fair Value Disclosure 77,737 69,801
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure 928 110
Loans And Leases Receivable Net Reported Amount Fair Value Disclosure 11,660,316 11,082,405
State Tax Credits Held For Sale, Fair Value Disclosure 11,141 14,663
Interest Receivable Fair Value Disclosure 3,021 2,256
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Deposits, Fair Value Disclosure 1,669,383 1,369,604
Subordinated Debt Obligations, Fair Value Disclosure 93,688 156,551
Other Borrowings Fair Value Disclosure 387,717 280,821
Estimated fair value    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss 1,039,814 858,871
Investments, Fair Value Disclosure 77,737 69,801
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure 928 110
Loans And Leases Receivable Net Reported Amount Fair Value Disclosure 11,622,939 10,983,459
State Tax Credits Held For Sale, Fair Value Disclosure 11,904 15,518
Interest Receivable Fair Value Disclosure 4,733 3,570
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Deposits, Fair Value Disclosure 1,665,449 1,364,377
Subordinated Debt Obligations, Fair Value Disclosure 92,093 155,102
Other Borrowings Fair Value Disclosure $ 364,901 $ 258,461