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Derivative Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Summary of Notional Amounts and Fair Values of Derivative Financial Instruments
The following table presents a summary of the notional amounts and fair values of derivative financial instruments:
 September 30, 2023December 31, 2022
 Notional
Amount
Asset
(Liability)
Fair Value
Notional
Amount
Asset
(Liability)
Fair Value
 (dollars in thousands)
Interest Rate Locks with Customers
Positive fair values$126,886 $373 $70,836 $182 
Negative fair values4,359 (39)4,939 (51)
Forward Commitments
Positive fair values53,000 653 — — 
Negative fair values  10,000 (147)
Interest Rate Derivatives with Customers
Positive fair values121,589 635 171,317 3,337 
Negative fair values4,254,247 (367,905)3,802,480 (280,401)
Interest Rate Derivatives with Dealer Counterparties
Positive fair values 4,254,247 226,882 3,802,480 161,956 
Negative fair values121,589 (1,001)171,317 (3,703)
Interest Rate Derivatives used in Cash Flow Hedges
Positive fair values700,000 239 600,000 1,321 
Negative fair values2,300,000 (3,584)1,000,000 (12,163)
Foreign Exchange Contracts with Customers
Positive fair values30,841 980 11,123 571 
Negative fair values13,994 (400)3,672 (85)
Foreign Exchange Contracts with Correspondent Banks
Positive fair values10,984 315 4,887 101 
Negative fair values23,610 (680)8,280 (499)
Summary of Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income
The following table presents the effect of fair value and cash flow hedge accounting on AOCI:
Amount of Gain (Loss) Recognized in OCI on Derivative Amount of Gain (Loss) Recognized in OCI Included ComponentAmount of Gain (Loss) Recognized in OCI Excluded ComponentLocation of Gain (Loss) Recognized from AOCI into IncomeAmount of Gain (Loss) Reclassified from AOCI into Income Amount of Gain (Loss) Reclassified from AOCI into Income Included ComponentAmount of Gain (Loss) Reclassified from AOCI into Income Excluded Component
(dollars in thousands)
Derivatives in Cash Flow Hedging Relationships: 
Three months ended September 30, 2023
Interest Rate Products$4,691 $4,691 $ Net Interest Income$(6,248)$(6,248)$ 
Three months ended September 30, 2022
Interest Rate Products(29,053)(29,053)— Net Interest Income(3,210)(3,210)— 
Nine months ended September 30, 2023
Interest Rate Products9,975 9,975  Net Interest Income(20,437)(20,437) 
Nine months ended September 30, 2022
Interest Rate Products(80,716)(80,716)— Net Interest Income(828)(828)— 
The following table presents the effect of fair value and cash flow hedge accounting on the income statement:

Consolidated Statements of Income Classification
Net Interest Income
Three months ended September 30Nine months ended September 30
2023202220232022
(dollars in thousands)
Total amounts of income line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded$(6,248)$(3,210)$(20,437)$(828)
Interest contracts:
Amount of gain (loss) reclassified from AOCI into income(6,248)(3,210)(20,437)(828)
Amount of gain or (loss) reclassified from AOCI into income as a result that a forecasted transaction is no longer probable of occurring —  — 
Amount of gain (loss) reclassified from AOCI into income - included component(6,248)(3,210)(20,437)(828)
Amount of gain (loss) reclassified from AOCI into income - excluded component —  — 
Summary of Fair Value Gains and Losses on Derivative Financial Instruments
The following table presents a summary of the net fair value gains (losses) on derivative financial instruments:
Consolidated Statements of Income ClassificationThree months ended September 30Nine months ended September 30
 2023202220232022
(dollars in thousands)
Mortgage banking derivatives(1)
Mortgage banking income$134 $1,403 $1,003 $(307)
Interest rate derivativesOther income(2,958)— (2,958)— 
Foreign exchange contractsOther income(57)(27)127 14 
Net fair value gains/(losses) on derivative financial instruments$(2,881)$1,376 $(1,828)$(293)
(1) Includes interest rate locks with customers and forward commitments.
Summary of Corporation's Mortgage Loans Held for Sale The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the consolidated financial statements as of the periods shown:
September 30,
2023
December 31,
2022
 (dollars in thousands)
Amortized cost(1)
$20,206 $7,180 
Fair value20,368 7,264 
(1) Cost basis of mortgage loans held for sale represents the unpaid principal balance.
Summary of Offsetting Derivative Assets The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets:
Gross AmountsGross Amounts Not Offset
Recognized on the Consolidated
on the Balance Sheets
ConsolidatedFinancialCashNet
Balance Sheets
Instruments(1)
Collateral(2)
Amount
(dollars in thousands)
September 30, 2023
Interest rate derivative assets$227,756 $(4,636)$ $223,120 
Foreign exchange derivative assets with correspondent banks315 (315)  
Total $228,071 $(4,951)$ $223,120 
Interest rate derivative liabilities$372,490 $(1,291)$(141,485)$229,714 
Foreign exchange derivative liabilities with correspondent banks680 (315) 365 
Total$373,170 $(1,606)$(141,485)$230,079 
December 31, 2022
Interest rate derivative assets$166,614 $(8,071)$— $158,543 
Foreign exchange derivative assets with correspondent banks101 (101)— — 
Total$166,715 $(8,172)$— $158,543 
Interest rate derivative liabilities$296,267 $(2,771)$(127,638)$165,858 
Foreign exchange derivative liabilities with correspondent banks499 (101)— 398 
Total$296,766 $(2,872)$(127,638)$166,256 

(1) For interest rate derivative assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default.
For interest rate derivative liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.
(2) Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate derivative transactions and foreign exchange
contracts with financial institution counterparties. Interest rate derivatives with customers are collateralized by the same collateral securing the underlying
loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.
Summary of Offsetting Derivative Liabilities The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets:
Gross AmountsGross Amounts Not Offset
Recognized on the Consolidated
on the Balance Sheets
ConsolidatedFinancialCashNet
Balance Sheets
Instruments(1)
Collateral(2)
Amount
(dollars in thousands)
September 30, 2023
Interest rate derivative assets$227,756 $(4,636)$ $223,120 
Foreign exchange derivative assets with correspondent banks315 (315)  
Total $228,071 $(4,951)$ $223,120 
Interest rate derivative liabilities$372,490 $(1,291)$(141,485)$229,714 
Foreign exchange derivative liabilities with correspondent banks680 (315) 365 
Total$373,170 $(1,606)$(141,485)$230,079 
December 31, 2022
Interest rate derivative assets$166,614 $(8,071)$— $158,543 
Foreign exchange derivative assets with correspondent banks101 (101)— — 
Total$166,715 $(8,172)$— $158,543 
Interest rate derivative liabilities$296,267 $(2,771)$(127,638)$165,858 
Foreign exchange derivative liabilities with correspondent banks499 (101)— 398 
Total$296,766 $(2,872)$(127,638)$166,256 

(1) For interest rate derivative assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default.
For interest rate derivative liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.
(2) Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate derivative transactions and foreign exchange
contracts with financial institution counterparties. Interest rate derivatives with customers are collateralized by the same collateral securing the underlying
loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.