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Derivative Financial Instruments (Notional Amount, and Collateral Posted Related to Loan-level Interest Rate Swaps) (Details) - Commercial Loan [Member] - Not Designated as Hedging [Member] - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Other Assets [Member] |  |  |
Derivative [Line Items] |  |  |
Interest Rate Swap Contracts - Commercial Loans, Fair Value (a) | [1] | $ 56 | $ 489
Interest Rate Swaps {Member] |  |  |
Derivative [Line Items] |  |  |
Interest Rate Swap Contracts - Commercial Loans, Notional Amount |  | 78,564 | 22,331
Interest Rate Swap Contracts - Commercial Loans, Cash Collateral Posted (b) | [2] | $ 1,600 | $ 500
[1] | Represents the total of the equal and offsetting fair value assets and liabilities related to the loan level interest rate swaps
[2] | Included in cash and due from banks on the Consolidated Balance Sheet

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- Definition Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.1) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),2) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
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- Details
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- Details
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Balance Type: |
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