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DERIVATIVES | 12 Months Ended
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Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
DERIVATIVES | 11. DERIVATIVES The Company has cash flow and fair value hedges that are derivatives designated as accounting hedges. The Company also has derivatives not designated as accounting hedges that include foreign exchange contracts, interest rate contracts, and Risk Participation Agreements. The Company’s mortgage banking derivatives do not have a material impact to the Company and are not included within the derivatives disclosures noted below. ​ ​ ​ ​ ​ ​ ​ The following table summarizes key elements of the Company’s derivative instruments as of December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2024 |  | 2023
​ | ​ | ​ | ​ | ​ | Derivative (2) | ​ | ​ | ​ | ​ | Derivative (2)
​ |  | Notional or |  | ​ | ​ |  | ​ | ​ |  | Notional or |  | ​ | ​ |  | ​ | ​
​ | ​ | Contractual | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Contractual | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amount (1) | ​ | Assets | ​ | Liabilities | ​ | Amount (1) | ​ | Assets | ​ | Liabilities
Derivatives designated as accounting hedges: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate contracts: (3) |  | ​ | ​ |  | ​ |  |  | ​ |  | ​ | ​ | ​ |  | ​ |  |  | ​ |
Cash flow hedges | ​ | $ | 900,000 | ​ | $ | — | ​ | $ | 6,467 | ​ | $ | 900,000 | ​ | $ | 1,419 | ​ | $ | 4,359
Fair value hedges: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Loans | ​ | ​ | 72,807 | ​ | ​ | 1,469 | ​ | ​ | — | ​ | ​ | 78,072 | ​ | ​ | 1,633 | ​ | ​ | —
Securities | ​ | ​ | 50,000 | ​ | ​ | 1,157 | ​ | ​ | — | ​ | ​ | 50,000 | ​ | ​ | 1,329 | ​ | ​ | —
Derivatives not designated as accounting hedges: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate contracts (3)(4) | ​ |  | 7,529,494 | ​ |  | 94,772 | ​ |  | 192,683 | ​ |  | 6,595,975 | ​ |  | 88,646 | ​ |  | 202,202
Foreign exchange contracts | ​ | ​ | 12,449 | ​ | ​ | 47 | ​ | ​ | 398 | ​ | ​ | 12,726 | ​ | ​ | 16 | ​ | ​ | 1,219
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash collateral (received)/pledged (5) | ​ | $ | — | ​ | $ | (15,685) | ​ | $ | — | ​ | $ | — | ​ | $ | (14,879) | ​ | $ | —
(1) Notional amounts are not recorded on the Company’s Consolidated Balance Sheets and are generally used only as a basis on which interest and other payments are determined. (2) Balances represent fair value of derivative financial instruments. (3) The Company’s cleared derivatives are classified as a single-unit of accounting, resulting in the fair value of the designated swap being reduced by the variation margin, which is treated as settlement of the related derivatives fair value for accounting purposes and is reported on a net basis. (4) Includes Risk Participation Agreements. (5) The fair value of derivative assets and liabilities is presented on a gross basis. The Company has not applied collateral netting; as such the amounts of cash collateral received or pledged are not offset against the derivative assets and derivative liabilities in the Consolidated Balance Sheets. ​ The following table summarizes the carrying value of the Company’s hedged assets in fair value hedges and the associated cumulative basis adjustments included in those carrying values as of December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2024 | ​ | 2023
​ |  | ​ | ​ |  | Cumulative |  | ​ |  | Cumulative
​ | ​ | ​ | ​ | ​ | Amount of Basis | ​ | ​ | ​ | Amount of Basis
​ | ​ | ​ | ​ | ​ | Adjustments | ​ | ​ | ​ | Adjustments
​ | ​ | ​ | ​ | ​ | Included in the | ​ | ​ | ​ | Included in the
​ | ​ | Carrying Amount | ​ | Carrying | ​ | Carrying Amount | ​ | Carrying
​ | ​ | of Hedged | ​ | Amount of the | ​ | of Hedged | ​ | Amount of the
​ | ​ | Assets/(Liabilities) | ​ | Hedged | ​ | Assets/(Liabilities) | ​ | Hedged
​ | ​ | Amount (1) |  | Assets/(Liabilities) | ​ | Amount (1) |  | Assets/(Liabilities)
Line items on the Consolidated Balance Sheets in which the hedged item is included: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Securities available-for-sale (1) (2) | ​ | $ | 73,603 | ​ | $ | (1,150) | ​ | $ | 82,203 | ​ | $ | (1,323)
Loans (3) | ​ |  | 72,807 | ​ |  | (10,063) | ​ |  | 78,072 | ​ |  | (9,392)
(1) These amounts include the amortized cost basis of the investment securities designated in hedging relationships for which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. The amount of the designated hedged item at December 31, 2024 and 2023 totaled $50 million. (2) Carrying value represents amortized cost. (3) The fair value of the swaps associated with the derivative related to hedged items at December 31, 2024 and 2023 was an unrealized gain of $10.2 million and $9.6 million, respectively. ​

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-5C Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/815/tableOfContent + Details
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