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v2.4.1.9

Regulatory Capital Requirements (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Tier 1 capital to risk-weighted assets [Abstract] |  |
Actual | $ 128,970,000 us-gaap_TierOneRiskBasedCapital | $ 121,967,000 us-gaap_TierOneRiskBasedCapital
Average assets [Abstract] |  |
Retained earnings from prior two years available for dividends | 12,326,000 fnlc_RetainedEarningsFromPriorTwoYearsAvailableForDividends |
Non Consolidated |  |
Tier 2 capital to risk-weighted asets [Abstract] |  |
Actual | 137,818,000 us-gaap_Capital / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 131,146,000 us-gaap_Capital / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
For capital adequacy purpose | 68,524,000 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 65,996,000 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
To be well-capitalized under prompt corrective action provisions | 85,655,000 us-gaap_CapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 82,495,000 us-gaap_CapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
Risk-weighted assets [Abstract] |  |
Actual (in hundredths) | 16.09%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 15.90%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
For capital adequacy purpose (in hundredths) | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
To be well-capitalized under prompt corrective action provisions (in hundredths) | 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
Actual (in hundredths) | 14.87%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 14.65%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
For capital adequacy purpose (in hundredths) | 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
To be well-capitalized under prompt corrective action provisions (in hundredths) | 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
Tier 1 capital to risk-weighted assets [Abstract] |  |
Actual | 127,374,000 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 120,819,000 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
For capital adequacy purpose | 34,262,000 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 32,998,000 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
To be well-capitalized under prompt corrective action provisions | 51,393,000 us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 49,497,000 us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
Tier 1 capital to average assets [Abstract] |  |
Actual | 127,374,000 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 120,819,000 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
For capital adequacy purpose | 58,086,000 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 57,203,000 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
To be well-capitalized under prompt corrective action provisions | 72,607,000 us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 71,504,000 us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
Average assets [Abstract] |  |
Actual (in hundredths) | 8.77%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 8.45%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
For capital adequacy purpose (in hundredths) | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
To be well-capitalized under prompt corrective action provisions (in hundredths) | 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember | 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets / dei_LegalEntityAxis = fnlc_NonConsolidatedMember
Consolidated |  |
Tier 2 capital to risk-weighted asets [Abstract] |  |
Actual | 139,414,000 us-gaap_Capital / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 132,294,000 us-gaap_Capital / dei_LegalEntityAxis = fnlc_ConsolidatedMember
For capital adequacy purpose | 68,532,000 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 66,005,000 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_ConsolidatedMember
Risk-weighted assets [Abstract] |  |
Actual (in hundredths) | 16.27%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 16.03%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember
For capital adequacy purpose (in hundredths) | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember
Actual (in hundredths) | 15.06%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 14.78%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember
For capital adequacy purpose (in hundredths) | 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember
Tier 1 capital to risk-weighted assets [Abstract] |  |
For capital adequacy purpose | 34,266,000 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 33,002,000 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_ConsolidatedMember
Tier 1 capital to average assets [Abstract] |  |
Actual | 128,970,000 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 121,967,000 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = fnlc_ConsolidatedMember
For capital adequacy purpose | $ 58,066,000 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_ConsolidatedMember | $ 56,280,000 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = fnlc_ConsolidatedMember
Average assets [Abstract] |  |
Actual (in hundredths) | 8.88%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 8.67%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember
For capital adequacy purpose (in hundredths) | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = fnlc_ConsolidatedMember

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- Definition The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958570-112826 + Details
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- Definition The amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Risk Based Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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