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LOANS AND CREDIT QUALITY - Amortized Cost of Collateral-dependent Loans by Class and Collateral Type (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	$ 14,568,795	$ 9,643,497
Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	60,866	4,373
Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	5
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	293	10
Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	6,835	441
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	18,057	0
Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	18,123	1,064
Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	4,700	2,853
Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	12,858	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	547,311	410,040
Commercial and industrial | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	20,822	1,079
Commercial and industrial | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	5
Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	293	10
Commercial and industrial | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	3,848	0
Commercial and industrial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial and industrial | Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	1,015	1,064
Commercial and industrial | Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	2,808	0
Commercial and industrial | Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	12,858	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	5,448,374	2,794,581
Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	5,448,374	2,794,581
Commercial real estate | Multifamily | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	17,892
Commercial real estate | Multifamily | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Multifamily | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Multifamily | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Multifamily | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	17,892
Commercial real estate | Multifamily | Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Multifamily | Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Multifamily | Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	1,864,040	1,657,597
Commercial real estate | Non-owner occupied | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	15,018
Commercial real estate | Non-owner occupied | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Non-owner occupied | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Non-owner occupied | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Non-owner occupied | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Non-owner occupied | Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	15,018
Commercial real estate | Non-owner occupied | Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Non-owner occupied | Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	535,776	104,430
Commercial real estate | Construction and land development | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	2,987	441
Commercial real estate | Construction and land development | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial real estate | Construction and land development | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial real estate | Construction and land development | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	2,987	441
Commercial real estate | Construction and land development | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial real estate | Construction and land development | Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial real estate | Construction and land development | Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial real estate | Construction and land development | Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Commercial real estate | Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	709,239	360,100
Commercial real estate | Owner occupied | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	2,090
Commercial real estate | Owner occupied | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Owner occupied | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Owner occupied | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Owner occupied | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Owner occupied | Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	2,090
Commercial real estate | Owner occupied | Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Commercial real estate | Owner occupied | Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	3,907,101	2,280,963
Residential Real Estate | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	2,057	2,853
Residential Real Estate | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Residential Real Estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Residential Real Estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Residential Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	165	0
Residential Real Estate | Retail Building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Residential Real Estate | Single Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	1,892	2,853
Residential Real Estate | Other non-real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	0	0
Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	954,615	1,596,935
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan and lease receivables	$ 602,339	$ 438,851

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ 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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-Publisher FASB
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