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COMMITMENTS AND CONTINGENCIES - Loan and Unfunded Commitments (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | $ 4,660,934 | $ 4,467,728
Gross loans and leases, excluding accrued interest | 13,494,841 | 13,424,070
Commercial |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 2,153,967 | 2,066,620
Gross loans and leases, excluding accrued interest | 4,693,786 | 4,632,241
Lease financing |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 0 | 0
Gross loans and leases, excluding accrued interest | 649,645 | 638,527
Construction real estate |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 711,584 | 680,920
Gross loans and leases, excluding accrued interest | 591,080 | 677,339
Commercial real estate - investor |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 202,341 | 204,747
Gross loans and leases, excluding accrued interest | 3,318,301 | 3,246,889
Commercial real estate-owner |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 36,996 | 39,973
Gross loans and leases, excluding accrued interest | 1,155,167 | 1,137,667
Residential real estate |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 0 | 0
Gross loans and leases, excluding accrued interest | 1,831,338 | 1,832,184
Home equity |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 1,171,062 | 1,103,581
Gross loans and leases, excluding accrued interest | 1,026,839 | 1,005,204
Installment |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 57,442 | 48,606
Gross loans and leases, excluding accrued interest | 162,314 | 188,694
Credit card |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 327,542 | 323,281
Gross loans and leases, excluding accrued interest | $ 66,371 | $ 65,325

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- Definition Amortized cost excluding accrued interest, before 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 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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