XML 142 R9999.htm IDEA: XBRL DOCUMENT
v3.19.1

Label | Element | Value
--- | --- | ---
Loans Receivable [Member] | Western Maryland And Northeastern Virginia [Member] | Performing According To Modified Terms [Member] |  |
Loans and leases receivable, net of deferred income | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome | $ 500,000

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_LoansReceivableMember
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Data Type: | na
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Period Type: |

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- Details
Name: | us-gaap_StatementGeographicalAxis=func_WesternMarylandAndNortheasternVirginiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_InternalCreditAssessmentAxis=func_PerformingAccordingToModifiedTermsMember
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Data Type: | na
Balance Type: |
Period Type: |