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Loan-Level Interest Rate Swaps (Notional Amount, and Collateral Posted Related to Loan-level Interest Rate Swaps) (Details) - Commercial Loan [Member] - Not Designated as Hedging [Member] $ in Thousands | Dec. 31, 2020 USD ($)
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Other Assets [Member] |  |
Derivative [Line Items] |  |
Interest Rate Swap Contracts - Commercial Loans, Fair Value (a) | $ 489 | [1]
Interest Rate Swaps {Member] |  |
Derivative [Line Items] |  |
Interest Rate Swap Contracts - Commercial Loans, Notional Amount | 22,331 |
Interest Rate Swap Contracts - Commercial Loans, Cash Collateral Posted (b) | $ 500 | [2]
[1] | Included in other assets on the Consolidated Balance Sheets
[2] | Included in cash and due from banks on the Consolidated Balance Sheet

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