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COMMITMENTS AND CONTINGENCIES - Loan and Unfunded Commitments (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | $ 4,074,151 | $ 3,750,657
Gross loans and leases, excluding accrued interest | 11,714,551 | 11,761,778
Commercial |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 1,932,137 | 1,887,965
Gross loans and leases, excluding accrued interest | 3,838,630 | 3,815,858
Lease financing |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 0 | 0
Gross loans and leases, excluding accrued interest | 596,734 | 598,045
Construction real estate |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 509,759 | 327,743
Gross loans and leases, excluding accrued interest | 627,960 | 779,446
Commercial real estate - investor |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 184,202 | 95,810
Gross loans and leases, excluding accrued interest | 3,052,134 | 3,093,384
Commercial real estate-owner |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 38,501 | 40,791
Gross loans and leases, excluding accrued interest | 996,236 | 968,360
Residential real estate |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 0 | 76,401
Gross loans and leases, excluding accrued interest | 1,494,464 | 1,462,284
Home equity |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 1,061,179 | 1,002,965
Gross loans and leases, excluding accrued interest | 935,975 | 849,039
Installment |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 27,590 | 33,200
Gross loans and leases, excluding accrued interest | 109,764 | 133,051
Credit card |  |
Other Commitments [Line Items] |  |
Unused Commitments to Extend Credit | 320,783 | 285,782
Gross loans and leases, excluding accrued interest | $ 62,654 | $ 62,311

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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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