XML 94 R80.htm IDEA: XBRL DOCUMENT
v3.22.4

Allowance for Loan Losses - Narrative (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) loan_class | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percent of related loans | 0.66% | 0.69% |  |
Increase (decrease) in qualitative portion | $ 1,312 |  |  |
Allowance for loan losses | $ 16,723 | $ 15,521 | $ 16,253 | $ 11,639
Allowance for loan losses as a percent of total loans | 0.87% | 0.94% |  |
Number of classes in the commercial loan portfolio | loan_class | 3 |  |  |
Loan-to-value percent, commercial real estate | 80.00% |  |  |
Number of residential loan classes | loan_class | 2 |  |  |
Construction loans, percent of capital | 55.80% |  |  |
Construction loans, maximum percent of capital | 100.00% |  |  |
Construction loans and non-owner-occupied commercial real estate loans, percent of capital | 226.30% |  |  |
Construction loans and non-owner-occupied commercial real estate loans, maximum percent of capital | 300.00% |  |  |
Outstanding loans and commitments subject by independent consulting firm | 60.00% |  |  |
Residential loans, loan to value percent minimum | 75.00% |  |  |
Residential loans, loan to value percent, maximum | 80.00% |  |  |
Consumer loans, loan to value percent, minimum | 80.00% |  |  |
Consumer loans, loan to value percent, maximum | 90.00% |  |  |
Commercial | Construction |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 821 | $ 746 | 662 | 365
Loan maturities | 2 years |  |  |
Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loan to value ratio | 0.80 |  |  |
Amortization term (in years) | 30 years |  |  |
Delinquent period before residential loans are placed on non-accrual status | 90 days |  |  |
Delinquent period for loans charged off | 180 days |  |  |
Delinquent period for loans charged off after receipt of notification | 60 days |  |  |
Residential | Construction |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 199 | 148 | 102 | 25
Loan maturities | 1 year |  |  |
Home equity line of credit |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 1,029 | 925 | 1,211 | 1,078
Loan maturities | 300 months |  |  |
Loan to value ratio | 0.80 |  |  |
Consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 1,062 | 833 | $ 778 | $ 867
Delinquent period before consumer loans are charged off | 120 days |  |  |
Unallocated Reserves |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 1,678 | $ 1,782 |  |
Percent of total allowance reserve | 10.00% | 11.50% |  |
Unallocated Reserves | Commercial | Construction |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 0 | $ 0 |  |
Unallocated Reserves | Residential | Construction |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 0 | 0 |  |
Unallocated Reserves | Home equity line of credit |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 0 | 0 |  |
Unallocated Reserves | Consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | $ 0 | $ 0 |  |

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

X
- Definition The high maximum percentage of loan to value for consumer loans based on purchase price of the collateral. + References No definition available. + Details
Name: | fnlc_CollateralizedConsumerLoansToIndividualsLoanToValueMaximumRangeHigh
Namespace Prefix: | fnlc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum percentage of loan to value for commercial real estate loans based on current appraisal information. + References No definition available. + Details
Name: | fnlc_CommercialRealEstateLoansMaximumLoanToValue
Namespace Prefix: | fnlc_
Data Type: | dtr-types: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: | dtr-types: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: | dtr-types: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: | dtr-types: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: | dtr-types: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, 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: | dtr-types: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: | dtr-types: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: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The low percentage of loan to value range for residential loans based on current appraisal information. + References No definition available. + Details
Name: | fnlc_ResidentialLoansTypicalLoanToValueRangeLow
Namespace Prefix: | fnlc_
Data Type: | dtr-types: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 excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
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: | 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: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
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: |