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Derivative Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | Information about the balance sheet location and fair value of the Corporation’s derivative instruments below:
|  | Interest Rate Swap Contracts |  |  |  |  |  |
|  | Asset Derivatives |  |  |  | Liability Derivatives |  |
|  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value
|  | (In Thousands) |  |  |  |  |  |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |
September 30, 2020 |  | Accrued interest receivable and other assets |  | $ | 58,210 |  |  | Accrued interest payable and other liabilities |  | $ | 58,210 |
December 31, 2019 |  | Accrued interest receivable and other assets |  | $ | 18,346 |  |  | Accrued interest payable and other liabilities |  | $ | 18,346 |
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |
September 30, 2020 |  | Accumulated other comprehensive income (1) |  | $ | 6,193 |  |  | Accrued interest payable and other liabilities |  | $ | 6,193 |
December 31, 2019 |  | Accumulated other comprehensive income (1) |  | $ | 2,539 |  |  | Accrued interest payable and other liabilities |  | $ | 2,539 |

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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 + Details
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