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Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	$ 134,771
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(21,874)	$ (43,215)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	137,950	134,771
Commercial and Industrial Portfolio Segment [Member]
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(12,768)	(35,789)
Commercial Real Estate Investor Owned Financing Receivable [Member]
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(700)	(4,869)
Construction and land development
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(3,224)	(9)
Other
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(262)	(793)
Non-Covered Loans
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	134,771	136,932	$ 145,041
Provision for Loan, Lease, and Other Losses	20,629	35,883	(4,210)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(21,874)	(43,215)	(9,393)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	4,424	5,171	5,494
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	137,950	134,771	136,932
Non-Covered Loans | Commercial and Industrial Portfolio Segment [Member]
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	58,886	53,835	63,825
Provision for Loan, Lease, and Other Losses	14,770	38,308	(6,121)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(13,073)	(36,302)	(6,082)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	2,648	3,045	2,213
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	63,231	58,886	53,835
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member]
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	31,280	36,191	35,877
Provision for Loan, Lease, and Other Losses	3,502	(335)	46
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(700)	(4,869)	(478)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	135	293	746
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	34,217	31,280	36,191
Non-Covered Loans | CRE - owner occupied
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	23,405	22,752	17,560
Provision for Loan, Lease, and Other Losses	(60)	523	4,867
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(3,074)	0	(395)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	129	130	720
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	20,400	23,405	22,752
Non-Covered Loans | Construction and land development
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	10,198	11,444	14,536
Provision for Loan, Lease, and Other Losses	2,764	(1,300)	(3,145)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(3,224)	(9)	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	99	63	53
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	9,837	10,198	11,444
Non-Covered Loans | Residential real estate
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	6,142	7,928	7,927
Provision for Loan, Lease, and Other Losses	128	(2,109)	540
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(878)	(656)	(2,068)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	1,142	979	1,529
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	6,534	6,142	7,928
Non-Covered Loans | Other
Allowance for Loan Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	4,860	4,782	5,316
Provision for Loan, Lease, and Other Losses	(475)	796	(397)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	(925)	(1,379)	(370)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	271	661	233
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	$ 3,731	$ 4,860	$ 4,782

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-6

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
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-Subparagraph (c)(2)
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-Paragraph 1
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