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Fair Value - Additional Information (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014
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Fair Value Disclosures [Abstract] |  |  |
Valuation allowance on real estate owned | $ 387us-gaap_RealEstateOwnedValuationAllowanceComponent | $ 654us-gaap_RealEstateOwnedValuationAllowanceComponent | $ 215us-gaap_RealEstateOwnedValuationAllowanceComponent
Valuation allowance on impaired financing receivable | $ 799fnlc_ImpairedFinancingReceivableMeasuredAtFairValueRelatedAllowance | $ 1,074fnlc_ImpairedFinancingReceivableMeasuredAtFairValueRelatedAllowance | $ 1,762fnlc_ImpairedFinancingReceivableMeasuredAtFairValueRelatedAllowance

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- Definition Impaired Financing Receivable Measured At Fair Value, Related Allowance + References No definition available. + Details
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- Details
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- Definition The valuation allowance loss on real estate owned or any impairment losses taken against real estate investments held for use or resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=29634951&loc=d3e1424-110224 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 43 -URI http://asc.fasb.org/extlink&oid=29634951&loc=d3e1739-110224 + Details
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