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Loans and Allowance for Credit Losses - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Deferred commitment cost	$ 20,700	$ 27,000
Servicing asset at fair value	56,000	328,000
Loans held for investment, net of allowance	7,858,402	$ 7,882,755
ADC Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment, net of allowance	$ 1,800,000
Percent of ADC loan portfolio using interest reserves	59.60%
Income Producing Commercial Real Estate and Real Estate Construction
Loans and Leases Receivable Disclosure [Line Items]
Stress test assumption increase interest rates	2.00%
Minimum | Income Producing Commercial Real Estate and Real Estate Construction
Loans and Leases Receivable Disclosure [Line Items]
Minimum cash flow debt service coverage ratio	1.15
Minimum | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Loan period, preferred term	5 years
Maximum | Real estate mortgage - residential | Land Acquisition Development and Construction Loans
Loans and Leases Receivable Disclosure [Line Items]
Loan period	36 months
Maximum | Consumer | Land Acquisition Development and Construction Loans
Loans and Leases Receivable Disclosure [Line Items]
Loan period	24 months
Maximum | Income Producing Commercial Real Estate and Real Estate Construction
Loans and Leases Receivable Disclosure [Line Items]
Minimum cash flow debt service coverage ratio	1.0
Maximum | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Loan period	10 years
Loan period, preferred term	7 years
Amortization term	25 years

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- Definition

Amortization period for loans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period of time between origination and maturity of a loan, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of fee received for commitment to originate or purchase financing receivable where likelihood of commitment being exercised is remote, to be recognized as service income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481598/310-20-45-2

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Section 50
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