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v2.4.1.9

Preferred and Common Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended | 0 Months Ended
--- | --- | --- | ---
Mar. 28, 2013 | Mar. 31, 2015 | Mar. 31, 2014 | May 08, 2013 | Mar. 27, 2013 | Aug. 24, 2011 | Jan. 09, 2009
Class of Stock [Line Items] |  |  |  |  |  |  |
Number of shares of common stock issuable pursuant to the Warrants, maximum (in shares) |  | 225,904us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights | 225,904us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights |  |  |  |
Exercise price of the Warrants (in dollars per share) |  | $ 16.60us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 |  |  |  |  |
Term of warrants |  | 10 years |  |  |  |  |
Assumptions used in determining fair value of warrants, common stock price (in dollars per share) |  | $ 16.60fnlc_AssumptionsUsedInDeterminingFairValueOfWarrantsCommonStockPrice |  |  |  |  |
Assumptions used in determining fair value of warrants, dividend yield |  | 4.70%fnlc_AssumptionsUsedInDeterminingFairValueOfWarrantsDividendYield |  |  |  |  |
Assumptions used in determining fair value of warrants, stock price volatility |  | 24.43%fnlc_AssumptionsUsedInDeterminingFairValueOfWarrantsStockPriceVolatility |  |  |  |  |
Assumptions used in determining fair value of warrants, risk-free interest rate |  | 2.01%fnlc_AssumptionsUsedInDeterminingFairValueOfWarrantsRiskFreeInterestRate |  |  |  |  |
Expected life of CPP Shares upon issuance |  | 5 years |  |  |  |  |
Proceeds from sale of common stock (in shares) | 760,771us-gaap_StockIssuedDuringPeriodSharesNewIssues |  |  |  |  |  |
Proceeds from sale of common stock | $ 11,649us-gaap_ProceedsFromIssuanceOfCommonStock | $ 110us-gaap_ProceedsFromIssuanceOfCommonStock | $ 103us-gaap_ProceedsFromIssuanceOfCommonStock |  |  |  |
Outstanding CPP shares - value | 10,000us-gaap_PreferredStockValueOutstanding |  |  |  |  |  |
Issuance of common stock for plans |  | 110us-gaap_StockIssuedDuringPeriodValueNewIssues | 103us-gaap_StockIssuedDuringPeriodValueNewIssues |  |  |  |
Capital Purchase Program |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Issuance of common stock for plans |  | 110us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_ShareRepurchaseProgramAxis = fnlc_CapitalPurchaseProgramMember | 103us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_ShareRepurchaseProgramAxis = fnlc_CapitalPurchaseProgramMember |  |  |  |
Series A Preferred Stock |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Proceeds from issuance of CPP Shares |  |  |  |  |  |  | 25,000us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Repurchase price of CPP shares (in dollars per share) |  |  |  |  |  |  | $ 1,000us-gaap_PreferredStockLiquidationPreference / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Cumulative dividend rate of CPP Shares (in hundredths) |  |  |  |  |  |  | 5.00%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
CPP Shares dividend period (in years) |  |  |  |  |  |  | 5 years
CPP Shares dividend rate after first five years (in hundredths) |  |  |  |  |  |  | 9.00%fnlc_CppSharesDividendRateAfterFirstFiveYears / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
Repurchase of fixed rate perpetual preferred stock, series A |  |  |  | $ 10,000us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember | $ 2,500us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember | $ 12,500us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember |

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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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