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Fair Value Measurements - Summary of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest $ 2,655,035 $ 1,862,270
US Government-sponsored Enterprises Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 182,572 276,040
US States and Political Subdivisions Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 572,705 409,197
Residential Mortgage-Backed Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,709,311 1,027,394
Corporate Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 170,984 128,893
US Treasury Bill Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 19,463 20,746
Recurring basis | Estimate of Fair Value Measurement [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 2,655,035 1,862,270
Other Investments 3,148 2,983
Derivative Asset 12,484 15,144
Total assets 2,670,667 $ 1,880,397
Derivative Liability, Statement of Financial Position [Extensible Enumeration]   Other Liabilities
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Derivative Liability 10,114 $ 18,692
Liabilities, Fair Value Disclosure 10,114 18,692
Recurring basis | US Government-sponsored Enterprises Debt Securities [Member] | Estimate of Fair Value Measurement [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 182,572 276,040
Recurring basis | US States and Political Subdivisions Debt Securities [Member] | Estimate of Fair Value Measurement [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 572,705 409,197
Recurring basis | Residential Mortgage-Backed Securities [Member] | Estimate of Fair Value Measurement [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,709,311 1,027,394
Recurring basis | Corporate Debt Securities [Member] | Estimate of Fair Value Measurement [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 19,463 20,746
Recurring basis | US Treasury Bill Securities [Member] | Estimate of Fair Value Measurement [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 170,984 128,893
Recurring basis | Fair Value, Inputs, Level 1 [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Other Investments 0 0
Derivative Asset 0 0
Total assets 0 0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Derivative Liability 0 0
Liabilities, Fair Value Disclosure 0 0
Recurring basis | Fair Value, Inputs, Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 1 [Member] | Residential Mortgage-Backed Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 1 [Member] | US Treasury Bill Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 2 [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 2,655,035 1,862,270
Other Investments 3,148 $ 2,983
Derivative Asset, Statement of Financial Position [Extensible Enumeration]   Prepaid Expense and Other Assets
Derivative Asset 12,484 $ 15,144
Total assets 2,670,667 1,880,397
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Derivative Liability 10,114 18,692
Liabilities, Fair Value Disclosure 10,114 18,692
Recurring basis | Fair Value, Inputs, Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 182,572 276,040
Recurring basis | Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 572,705 409,197
Recurring basis | Fair Value, Inputs, Level 2 [Member] | Residential Mortgage-Backed Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,709,311 1,027,394
Recurring basis | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 19,463 20,746
Recurring basis | Fair Value, Inputs, Level 2 [Member] | US Treasury Bill Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 170,984 128,893
Recurring basis | Fair Value, Inputs, Level 3 [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Other Investments 0 0
Derivative Asset 0 0
Total assets 0 0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Derivative Liability 0 0
Liabilities, Fair Value Disclosure 0 0
Recurring basis | Fair Value, Inputs, Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 3 [Member] | Residential Mortgage-Backed Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 0 0
Recurring basis | Fair Value, Inputs, Level 3 [Member] | US Treasury Bill Securities [Member]    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Debt Securities, Available-for-Sale, Excluding Accrued Interest $ 0 $ 0