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Loans and Allowance for Credit Losses - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Unamortized net deferred fees	$ 18,400	$ 18,800
Servicing asset	77,400	63,700
Net loans	7,148,451	$ 7,820,498
Loans held for sale	124,100
ADC Loans
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Net loans	$ 1,500,000
Percent of ADC loan portfolio using interest reserves	54.00%
Income Producing Commercial Real Estate and Real Estate Construction
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Minimum cash flow debt service coverage ratio	1.15
Stress test assumption increase interest rates	2.00%
Commercial
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Loans transfer from HFI to HFS	$ 136,500
Loan and lease, financing receivables on nonaccrual	$ 121,300
Maximum | Real estate mortgage - residential: | Land Acquisition Development and Construction Loans
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Loan term (in months)	36 months
Maximum | Consumer | Land Acquisition Development and Construction Loans
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Loan term (in months)	24 months
Maximum | Commercial
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Loan period (in years)	10 years
Loan period, preferred term (in years)	7 years
Amortization term (in years)	25 years
Minimum | Commercial
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]
Loan period, preferred term (in years)	5 years

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