XML 59 R48.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Loans - Impaired Loans by Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | $ 20,235 | $ 20,544 | $ 19,716
Recorded investment, with related allowance | 7,617 | 8,066 | 7,867
Recorded Investment | 27,852 | 28,610 | 27,583
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 22,308 | 22,651 | 21,853
Unpaid principal balance with related allowance | 7,990 | 8,427 | 8,116
Unpaid Principal Balance | 30,298 | 31,078 | 29,969
Related Allowance | 768 | 599 | 974
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 19,817 | 20,490 | 19,605
Average recorded investment, with related allowance | 7,732 | 8,483 | 8,612
Average Recorded Investment | 27,549 | 28,973 | 28,217
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 211 | 187 | 781
Interest income, cash basis method, with related allowance | 82 | 88 | 323
Interest income, cash basis method | 293 | 275 | 1,104
Commercial | Real estate |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 5,949 | 7,381 | 5,201
Recorded investment, with related allowance | 4,722 | 3,129 | 4,820
Recorded Investment | 10,671 | 10,510 | 10,021
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 6,450 | 7,712 | 5,614
Unpaid principal balance with related allowance | 4,908 | 3,213 | 4,925
Unpaid Principal Balance | 11,358 | 10,925 | 10,539
Related Allowance | 351 | 69 | 505
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 5,444 | 7,221 | 6,252
Average recorded investment, with related allowance | 4,741 | 3,399 | 4,153
Average Recorded Investment | 10,185 | 10,620 | 10,405
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 51 | 79 | 220
Interest income, cash basis method, with related allowance | 46 | 36 | 186
Interest income, cash basis method | 97 | 115 | 406
Commercial | Construction |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 0 | 179 | 0
Recorded investment, with related allowance | 763 | 788 | 763
Recorded Investment | 763 | 967 | 763
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 0 | 238 | 0
Unpaid principal balance with related allowance | 763 | 788 | 763
Unpaid Principal Balance | 763 | 1,026 | 763
Related Allowance | 101 | 96 | 100
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 0 | 80 | 32
Average recorded investment, with related allowance | 763 | 926 | 816
Average Recorded Investment | 763 | 1,006 | 848
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 0 | 1 | 0
Interest income, cash basis method, with related allowance | 9 | 8 | 36
Interest income, cash basis method | 9 | 9 | 36
Commercial | Other |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 1,476 | 1,097 | 1,671
Recorded investment, with related allowance | 234 | 88 | 72
Recorded Investment | 1,710 | 1,185 | 1,743
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 1,636 | 1,137 | 1,852
Unpaid principal balance with related allowance | 272 | 96 | 72
Unpaid Principal Balance | 1,908 | 1,233 | 1,924
Related Allowance | 39 | 21 | 39
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 1,595 | 1,121 | 1,074
Average recorded investment, with related allowance | 125 | 80 | 317
Average Recorded Investment | 1,720 | 1,201 | 1,391
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 22 | 8 | 86
Interest income, cash basis method, with related allowance | 4 | 0 | 0
Interest income, cash basis method | 26 | 8 | 86
Municipal |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 0 | 0 | 0
Recorded investment, with related allowance | 0 | 0 | 0
Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 0 | 0 | 0
Unpaid principal balance with related allowance | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 0 | 0 | 0
Average recorded investment, with related allowance | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 0 | 0 | 0
Interest income, cash basis method, with related allowance | 0 | 0 | 0
Interest income, cash basis method | 0 | 0 | 0
Residential | Construction |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 0 | 0 | 0
Recorded investment, with related allowance | 0 | 0 | 0
Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 0 | 0 | 0
Unpaid principal balance with related allowance | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 0 | 0 | 0
Average recorded investment, with related allowance | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 0 | 0 | 0
Interest income, cash basis method, with related allowance | 0 | 0 | 0
Interest income, cash basis method | 0 | 0 | 0
Residential | Term |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 11,388 | 10,543 | 11,483
Recorded investment, with related allowance | 1,872 | 3,997 | 2,186
Recorded Investment | 13,260 | 14,540 | 13,669
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 12,470 | 11,541 | 12,654
Unpaid principal balance with related allowance | 2,020 | 4,265 | 2,328
Unpaid Principal Balance | 14,490 | 15,806 | 14,982
Related Allowance | 251 | 384 | 304
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 11,402 | 10,715 | 11,025
Average recorded investment, with related allowance | 2,077 | 3,995 | 3,209
Average Recorded Investment | 13,479 | 14,710 | 14,234
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 129 | 91 | 442
Interest income, cash basis method, with related allowance | 23 | 43 | 101
Interest income, cash basis method | 152 | 134 | 543
Home equity line of credit |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 1,422 | 1,344 | 1,361
Recorded investment, with related allowance | 26 | 64 | 26
Recorded Investment | 1,448 | 1,408 | 1,387
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 1,752 | 2,023 | 1,733
Unpaid principal balance with related allowance | 27 | 65 | 28
Unpaid Principal Balance | 1,779 | 2,088 | 1,761
Related Allowance | 26 | 29 | 26
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 1,376 | 1,353 | 1,213
Average recorded investment, with related allowance | 26 | 83 | 69
Average Recorded Investment | 1,402 | 1,436 | 1,282
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 9 | 8 | 33
Interest income, cash basis method, with related allowance | 0 | 1 | 0
Interest income, cash basis method | 9 | 9 | 33
Consumer |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded investment, with no related allowance | 0 | 0 | 0
Recorded investment, with related allowance | 0 | 0 | 0
Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid principal balance, with no related allowance | 0 | 0 | 0
Unpaid principal balance with related allowance | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, with no related allowance | 0 | 0 | 9
Average recorded investment, with related allowance | 0 | 0 | 48
Average Recorded Investment | 0 | 0 | 57
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Interest income, cash basis method, with no related allowance | 0 | 0 | 0
Interest income, cash basis method, with related allowance | 0 | 0 | 0
Interest income, cash basis method | $ 0 | $ 0 | $ 0

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethodAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_RealEstateLoanMember
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_OtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnlc_MunicipalPortfolioMember
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: |