XML 32 R52.htm IDEA: XBRL DOCUMENT
v3.20.1

Allowance for Loan Losses - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) loan_class | Dec. 31, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of classes in the loan portfolio | loan_class | 8 |  |  |
Allowance for loan and lease losses (as a percentage) | 0.51% | 0.48% |  |
Allowance for loan and lease losses, period increase (decrease) | $ 585 |  |  |
Allowance for loan losses | $ 11,858 | $ 11,639 | $ 11,490 | $ 11,232
Allowance for loan losses as a percent of total loans | 0.88% | 0.90% | 0.91% |
Number of classes in the commercial loan portfolio | loan_class | 3 |  |  |
Residential loans typical loan to value range (as a percentage) | 80.00% |  |  |
Number of classes in the residential loan portfolio | loan_class | 2 |  |  |
Construction loans accrual to company capital | 30.60% |  |  |
Constructions loan portfolio maximum to company capital | 100.00% |  |  |
Construction and non owner occupied commercial real estate | 126.50% |  |  |
Maximum loan portfolio to company capital | 300.00% |  |  |
Outstanding loans and commitments subject by independent consulting firm | 60.00% |  |  |
Consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 725 | $ 867 | $ 660 | 630
Delinquent period before consumer loans charged off | 120 days |  |  |
Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loan-to-value ratio | 0.80 |  |  |
Amortization term of residential loans | 30 years |  |  |
Delinquent period before residential loans placed on non accrual status | 90 days |  |  |
Delinquent period for loans charged off | 180 days |  |  |
Delinquency period for loans charged off after receipt of notification from bankruptcy court | 60 days |  |  |
Home equity line of credit |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 1,012 | 1,078 | 630 | 730
Loan-to-value ratio | 0.80 |  |  |
Loan maturities period | 300 months |  |  |
Unallocated Reserves |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 2,121 | $ 1,182 | 1,644 |
Total reserve allowance accounted for by loan loss allowances (percent) | 17.90% | 10.20% |  |
Construction | Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 32 | $ 25 | $ 30 | $ 34
Loan maturities period | 1 year |  |  |
Minimum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Residential loans typical loan to value range (as a percentage) | 75.00% |  |  |
Collateralized consumer loans to individuals loan to value maximum range (as a percentage) | 80.00% |  |  |
Maximum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Residential loans typical loan to value range (as a percentage) | 80.00% |  |  |
Collateralized consumer loans to individuals loan to value maximum range (as a percentage) | 90.00% |  |  |

X
- Definition Allowance for Loan Losses of Total Loans, Percentage + References No definition available. + Details
Name: | fnlc_AllowanceforLoanLossesofTotalLoansPercentage
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Allowance for Loan and Lease Losses, Related Loans, Percentage + References No definition available. + Details
Name: | fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPercentage
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allowance for Loan and Lease Losses, Related Loans, Period Increase (Decrease) + References No definition available. + Details
Name: | fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease
Namespace Prefix: | fnlc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Collateralized Consumer Loans To Individuals Loan To Value + References No definition available. + Details
Name: | fnlc_CollateralizedConsumerLoansToIndividualsLoanToValue
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The regulatory maximum allowed ratio of loan portfolio to Company capital for construction and non-owner-occupied commercial real estate. + References No definition available. + Details
Name: | fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The actual ratio of loan amount to Company capital for construction and non-owner-occupied commercial real estate. + References No definition available. + Details
Name: | fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The regulatory maximum allowed ratio of loan portfolio to Company capital for construction loans. + References No definition available. + Details
Name: | fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The ratio of loan portfolio to Company capital for construction loans . + References No definition available. + Details
Name: | fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Delinquent Period Before Consumer Loans Charged Off + References No definition available. + Details
Name: | fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff
Namespace Prefix: | fnlc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum amount of days past due at which residential loans are placed on non-accrual status.. + References No definition available. + Details
Name: | fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus
Namespace Prefix: | fnlc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Delinquent Period for Loans Charged Off + References No definition available. + Details
Name: | fnlc_DelinquentPeriodforLoansChargedOff
Namespace Prefix: | fnlc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Delinquent Period for Loans Charged Off, Period After Receipt of Notification from Bankruptcy Court + References No definition available. + Details
Name: | fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt
Namespace Prefix: | fnlc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Leases Receivable, Amortization Term + References No definition available. + Details
Name: | fnlc_LoansandLeasesReceivableAmortizationTerm
Namespace Prefix: | fnlc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Leases Receivable, Commercial, Number of Loan Classes + References No definition available. + Details
Name: | fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses
Namespace Prefix: | fnlc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans and Leases Receivable, Loan to Value Ratio + References No definition available. + Details
Name: | fnlc_LoansandLeasesReceivableLoantoValueRatio
Namespace Prefix: | fnlc_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Leases Receivable, Number of Loan Classes + References No definition available. + Details
Name: | fnlc_LoansandLeasesReceivableNumberofLoanClasses
Namespace Prefix: | fnlc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans and Leases Receivable, Residential, Number of Loan Classes + References No definition available. + Details
Name: | fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses
Namespace Prefix: | fnlc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans and Leases Receivable, Term + References No definition available. + Details
Name: | fnlc_LoansandLeasesReceivableTerm
Namespace Prefix: | fnlc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of loans and commitments subject to review by an independent consulting firm each year. + References No definition available. + Details
Name: | fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of Total Reserve Allowance accounted for by Loan Loss Allowances + References No definition available. + Details
Name: | fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Residential Loans Typical Loan To Value + References No definition available. + Details
Name: | fnlc_ResidentialLoansTypicalLoanToValue
Namespace Prefix: | fnlc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + 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 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
Name: | us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnlc_HomeEquityLIneofCreditPortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fnlc_FinancingReceivableInformationByTypeOfReserveAxis=fnlc_UnallocatedReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |