XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.20.1

Loans And Related Allowances For Loan Losses (Narrative) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 USD ($) contract | Mar. 31, 2019 USD ($) contract | Dec. 31, 2019 USD ($) contract | Jun. 30, 2019 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | $ 11,012,000 |  | $ 10,849,000 | $ 2,100,000
Percentage of loan portfolio accruing loans past due 30 days or more |  |  | 0.33% |
Financing receivable, modifications, number of contracts | contract | 9,068 |  |  |
Financing receivable, modifications, recorded investment | $ 1,053,732,000 |  |  |
Substandard [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Increase in non-accrual status | $ 6,700,000 |  |  |
COVID-19 [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Percentage of loan portfolio accruing loans past due 30 days or more | 0.35% |  |  |
Partial Charge Off [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | $ 100,000 |  | $ 100,000 |
New TDRs [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, number of contracts | contract | 0 | 0 |  |
Existing TDRs [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, number of contracts | contract | 0 | 2 |  |
Financing receivable, modifications, subsequent default, recorded investment |  | $ 0 |  |
Existing TDRs loans Remodified After Maturity [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, number of contracts | contract | 15 |  | 15 |
Financing receivable, modifications, recorded investment | $ 4,100,000 |  | $ 4,200,000 |
Foreclosure 1-4 Family Real Estate Properties [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans secured by real estate properties in process of foreclosure | 200,000 |  | 100,000 |
Commercial real estate- non owner-occupied [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | 18,000 |  | 33,000 |
Commercial real estate- all other CRE [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | 867,000 |  | 647,000 |
All Other Acquisition And Development [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Increase in non-accrual status |  | $ 8,000,000 |  |
Nonaccrual loans | 8,158,000 |  | 8,058,000 |
All Other Acquisition And Development [Member] | New TDRs [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Increase in non-accrual status | $ 200,000 |  |  |
Financing receivable, modifications, number of contracts | contract | 1 |  |  |
Commercial and industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans |  |  | 30,000 |
Residential mortgage- term [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | $ 1,168,000 |  | 1,219,000 |
Residential mortgage- home equity [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | 798,000 |  | 858,000 |
Consumer [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans | $ 3,000 |  | $ 4,000 |

X
- Definition Increase In Financing Receivable Recorded Investment Nonaccrual Status + References No definition available. + Details
Name: | func_IncreaseInFinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | func_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage Of Loan Portfolio Accruing Loans Past Due Thirty Days Or More + References No definition available. + Details
Name: | func_PercentageOfLoanPortfolioAccruingLoansPastDueThirtyDaysOrMore
Namespace Prefix: | func_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the aggregate value of loans, trade receivables, securities and financial instruments that serve as collateral for obligations arising from a transfer of financial assets recorded as a secured borrowing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5086-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnusualRiskOrUncertaintyByNatureAxis=func_CovidNineteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=func_PartialChargeOffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=func_NewTroubledDebtRestructuringLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=func_ExistingTroubledDebtRestructingLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=func_PreExistingTroubledDebtRestructuringLoansRemodifiedAfterMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=func_Foreclosure14FamilyRealEstatePropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=func_CommercialRealEstateNonOwnerOccupiedFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=func_OtherCommercialRealEstateFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=func_AllOtherAcquisitionAndDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |