XML 66 R55.htm IDEA: XBRL DOCUMENT
v3.25.1

Allowance for Credit Losses - Activity by Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | $ 24,871 | $ 24,030 | $ 24,030
Charge offs | (208) | (96) | (747)
Recoveries | 55 | 174 | 284
Credit loss (reduction) expense | 396 | 99 | 1,304
Ending balance | 25,114 | 24,207 | 24,871
Commercial | Real estate owner occupied |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 5,045 | 4,633 | 4,633
Charge offs | 0 | 0 | 0
Recoveries | 0 | 100 | 100
Credit loss (reduction) expense | 144 | 447 | 312
Ending balance | 5,189 | 5,180 | 5,045
Commercial | Real estate non-owner occupied |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 4,829 | 4,285 | 4,285
Charge offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Credit loss (reduction) expense | 41 | (20) | 544
Ending balance | 4,870 | 4,265 | 4,829
Commercial | Construction |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 944 | 1,978 | 1,978
Charge offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Credit loss (reduction) expense | (325) | (1,158) | (1,034)
Ending balance | 619 | 820 | 944
Commercial | C&I |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 5,364 | 5,001 | 5,001
Charge offs | (146) | 0 | (451)
Recoveries | 26 | 23 | 25
Credit loss (reduction) expense | 255 | 59 | 789
Ending balance | 5,499 | 5,083 | 5,364
Commercial | Multifamily |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 1,239 | 1,318 | 1,318
Charge offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Credit loss (reduction) expense | 216 | 189 | (79)
Ending balance | 1,455 | 1,507 | 1,239
Commercial | Agriculture |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 605 | 0 | 0
Charge offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Credit loss (reduction) expense | (18) | 392 | 605
Ending balance | 587 | 392 | 605
Municipal |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 262 | 334 | 334
Charge offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Credit loss (reduction) expense | (27) | (140) | (72)
Ending balance | 235 | 194 | 262
Residential | Construction |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 474 | 618 | 618
Charge offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Credit loss (reduction) expense | (9) | (56) | (144)
Ending balance | 465 | 562 | 474
Residential | Term |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 5,241 | 4,991 | 4,991
Charge offs | (1) | 0 | (37)
Recoveries | 2 | 25 | 32
Credit loss (reduction) expense | 18 | 338 | 255
Ending balance | 5,260 | 5,354 | 5,241
Home Equity |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 686 | 626 | 626
Charge offs | 0 | 0 | (7)
Recoveries | 2 | 3 | 24
Credit loss (reduction) expense | 63 | 48 | 43
Ending balance | 751 | 677 | 686
Consumer |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 182 | 246 | 246
Charge offs | (61) | (96) | (252)
Recoveries | 25 | 23 | 103
Credit loss (reduction) expense | 38 | 0 | 85
Ending balance | $ 184 | $ 173 | $ 182

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossesRollForward
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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnlc_MunicipalPortfolioSegmentMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fnlc_TermLoanMember
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: |