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Loans - Credit Quality Based on Aging Status (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	$ 11,082,405	$ 10,749,347
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,220,355	10,884,118
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	11,220,355	10,884,118
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,220,818	10,888,345
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,607,755	2,452,402
Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,359,956	2,344,117
Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	892,563	760,122
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,655,779	4,646,371
Commercial and Industrial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,432,837	4,475,490
Commercial and Industrial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	151,381	89,066
Commercial and Industrial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	71,561	81,815
Residential Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	358,616	371,476
Residential Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	332,318	358,299
Residential Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,126	2,812
Residential Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	22,172	10,365
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	276,512	270,964
Other | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	264,741	244,839
Other | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,766	26,117
Other | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	5	8
Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	108,106	77,452
Performing Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	17,175	17,885
Performing Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	27,349	28,373
Performing Financial Instruments [Member] | Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	60,899	26,076
Performing Financial Instruments [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	647	712
Performing Financial Instruments [Member] | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	2,036	4,406
Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	20	117
Nonperforming Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Nonperforming Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Nonperforming Financial Instruments [Member] | Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	11	112
Nonperforming Financial Instruments [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	0	0
Nonperforming Financial Instruments [Member] | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	9	5
Performing And Nonperforming Financial Instruments
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	108,126	77,569
Performing And Nonperforming Financial Instruments | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	17,175	17,885
Performing And Nonperforming Financial Instruments | Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	27,349	28,373
Performing And Nonperforming Financial Instruments | Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	60,910	26,188
Performing And Nonperforming Financial Instruments | Residential Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	647	712
Performing And Nonperforming Financial Instruments | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	$ 2,045	$ 4,411

X

- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
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-Section 45
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- Definition

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