3.5.0.2 html 880 372 1 false 67 0 false 10 false false R1.htm 0001000 - Document - Document and Entity Information Sheet http://www.thefirst.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001000 - Statement - Consolidated Balance Sheets (Unaudited) Sheet http://www.thefirst.com/role/ConsolidatedBalanceSheetsUnaudited Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 1001501 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://www.thefirst.com/role/ConsolidatedBalanceSheetsUnauditedParenthetical Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 1002000 - Statement - Consolidated Statements of Income and Comprehensive Income (Unaudited) Sheet http://www.thefirst.com/role/ConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited Consolidated Statements of Income and Comprehensive Income (Unaudited) Statements 4 false false R5.htm 1002001 - Statement - Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) Sheet http://www.thefirst.com/role/ConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnauditedParenthetical Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) Statements 5 false false R6.htm 1003000 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) Sheet http://www.thefirst.com/role/ConsolidatedStatementsOfChangesInShareholdersEquityUnaudited Consolidated Statements of Changes in Shareholders' Equity (Unaudited) Statements 6 false false R7.htm 1003501 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) Sheet http://www.thefirst.com/role/ConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) Statements 7 false false R8.htm 1004000 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.thefirst.com/role/ConsolidatedStatementsOfCashFlowsUnaudited Consolidated Statements of Cash Flows (Unaudited) Statements 8 false false R9.htm 2101100 - Disclosure - Basis of Presentation Sheet http://www.thefirst.com/role/BasisOfPresentation Basis of Presentation Notes 9 false false R10.htm 2101100 - Disclosure - Investment Securities Sheet http://www.thefirst.com/role/InvestmentSecurities Investment Securities Notes 10 false false R11.htm 2102100 - Disclosure - Loans Sheet http://www.thefirst.com/role/Loans Loans Notes 11 false false R12.htm 2104100 - Disclosure - Allowance for Loan Losses Sheet http://www.thefirst.com/role/AllowanceForLoanLosses Allowance for Loan Losses Notes 12 false false R13.htm 2105100 - Disclosure - Stock Options and Stock-Based Compensation Sheet http://www.thefirst.com/role/StockOptionsAndStockBasedCompensation Stock Options and Stock-Based Compensation Notes 13 false false R14.htm 2106100 - Disclosure - Preferred and Common Stock Sheet http://www.thefirst.com/role/PreferredAndCommonStock Preferred and Common Stock Notes 14 false false R15.htm 2107100 - Disclosure - Earnings Per Share Sheet http://www.thefirst.com/role/EarningsPerShare Earnings Per Share Notes 15 false false R16.htm 2108100 - Disclosure - Employee Benefit Plans Sheet http://www.thefirst.com/role/EmployeeBenefitPlans Employee Benefit Plans Notes 16 false false R17.htm 2109100 - Disclosure - Other Comprehensive Income (Loss) Sheet http://www.thefirst.com/role/OtherComprehensiveIncomeLoss Other Comprehensive Income (Loss) Notes 17 false false R18.htm 2110100 - Disclosure - Financial Derivative Instruments Sheet http://www.thefirst.com/role/FinancialDerivativeInstruments Financial Derivative Instruments Notes 18 false false R19.htm 2111100 - Disclosure - Mortgage Servicing Rights Sheet http://www.thefirst.com/role/MortgageServicingRights Mortgage Servicing Rights Notes 19 false false R20.htm 2112100 - Disclosure - Income Taxes Sheet http://www.thefirst.com/role/IncomeTaxes Income Taxes Notes 20 false false R21.htm 2113100 - Disclosure - Certificates of Deposit Sheet http://www.thefirst.com/role/CertificatesOfDeposit Certificates of Deposit Notes 21 false false R22.htm 2114100 - Disclosure - Reclassifications Sheet http://www.thefirst.com/role/Reclassifications Reclassifications Notes 22 false false R23.htm 2115100 - Disclosure - Fair Value Sheet http://www.thefirst.com/role/FairValue Fair Value Notes 23 false false R24.htm 2117100 - Disclosure - Impact of Recently Issued Accounting Standards Sheet http://www.thefirst.com/role/ImpactOfRecentlyIssuedAccountingStandards Impact of Recently Issued Accounting Standards Notes 24 false false R25.htm 2210201 - Disclosure - Financial Derivative Instruments (Policies) Sheet http://www.thefirst.com/role/FinancialDerivativeInstrumentsPolicies Financial Derivative Instruments (Policies) Policies http://www.thefirst.com/role/ImpactOfRecentlyIssuedAccountingStandards 25 false false R26.htm 2214201 - Disclosure - Reclassifications (Policies) Sheet http://www.thefirst.com/role/ReclassificationsPolicies Reclassifications (Policies) Policies http://www.thefirst.com/role/ImpactOfRecentlyIssuedAccountingStandards 26 false false R27.htm 2217201 - Disclosure - Impact of Recently Issued Accounting Standards (Policies) Sheet http://www.thefirst.com/role/ImpactOfRecentlyIssuedAccountingStandardsPolicies Impact of Recently Issued Accounting Standards (Policies) Policies http://www.thefirst.com/role/ImpactOfRecentlyIssuedAccountingStandards 27 false false R28.htm 2301301 - Disclosure - Investment Securities (Tables) Sheet http://www.thefirst.com/role/InvestmentSecuritiesTables Investment Securities (Tables) Tables http://www.thefirst.com/role/InvestmentSecurities 28 false false R29.htm 2302301 - Disclosure - Loans (Tables) Sheet http://www.thefirst.com/role/LoansTables Loans (Tables) Tables http://www.thefirst.com/role/Loans 29 false false R30.htm 2304301 - Disclosure - Allowance for Loan Losses (Tables) Sheet http://www.thefirst.com/role/AllowanceForLoanLossesTables Allowance for Loan Losses (Tables) Tables http://www.thefirst.com/role/AllowanceForLoanLosses 30 false false R31.htm 2305301 - Disclosure - Stock Options and Stock-Based Compensation (Tables) Sheet http://www.thefirst.com/role/StockOptionsAndStockBasedCompensationTables Stock Options and Stock-Based Compensation (Tables) Tables http://www.thefirst.com/role/StockOptionsAndStockBasedCompensation 31 false false R32.htm 2307301 - Disclosure - Earnings Per Share (Tables) Sheet http://www.thefirst.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://www.thefirst.com/role/EarningsPerShare 32 false false R33.htm 2308301 - Disclosure - Employee Benefit Plans (Tables) Sheet http://www.thefirst.com/role/EmployeeBenefitPlansTables Employee Benefit Plans (Tables) Tables http://www.thefirst.com/role/EmployeeBenefitPlans 33 false false R34.htm 2309301 - Disclosure - Other Comprehensive Income (Loss) (Tables) Sheet http://www.thefirst.com/role/OtherComprehensiveIncomeLossTables Other Comprehensive Income (Loss) (Tables) Tables http://www.thefirst.com/role/OtherComprehensiveIncomeLoss 34 false false R35.htm 2310302 - Disclosure - Financial Derivative Instruments (Tables) Sheet http://www.thefirst.com/role/FinancialDerivativeInstrumentsTables Financial Derivative Instruments (Tables) Tables http://www.thefirst.com/role/FinancialDerivativeInstruments 35 false false R36.htm 2311301 - Disclosure - Mortgage Servicing Rights (Tables) Sheet http://www.thefirst.com/role/MortgageServicingRightsTables Mortgage Servicing Rights (Tables) Tables http://www.thefirst.com/role/MortgageServicingRights 36 false false R37.htm 2313301 - Disclosure - Certificates of Deposit (Tables) Sheet http://www.thefirst.com/role/CertificatesOfDepositTables Certificates of Deposit (Tables) Tables http://www.thefirst.com/role/CertificatesOfDeposit 37 false false R38.htm 2315301 - Disclosure - Fair Value (Tables) Sheet http://www.thefirst.com/role/FairValueTables Fair Value (Tables) Tables http://www.thefirst.com/role/FairValue 38 false false R39.htm 2401402 - Disclosure - Investment Securities Amortized Cost and Estimated Fair Value of Available for Sale Securities (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesAmortizedCostAndEstimatedFairValueOfAvailableForSaleSecuritiesDetails Investment Securities Amortized Cost and Estimated Fair Value of Available for Sale Securities (Details) Details 39 false false R40.htm 2401403 - Disclosure - Investment Securities Amortized Cost and Estimated Fair Value of Held to Maturity Securities (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesAmortizedCostAndEstimatedFairValueOfHeldToMaturitySecuritiesDetails Investment Securities Amortized Cost and Estimated Fair Value of Held to Maturity Securities (Details) Details 40 false false R41.htm 2401404 - Disclosure - Investment Securities Amortized Cost and Estimated Fair Value of Restricted Equity Securities (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesAmortizedCostAndEstimatedFairValueOfRestrictedEquitySecuritiesDetails Investment Securities Amortized Cost and Estimated Fair Value of Restricted Equity Securities (Details) Details 41 false false R42.htm 2401405 - Disclosure - Investment Securities Contractual Maturities of Investment Securities (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesContractualMaturitiesOfInvestmentSecuritiesDetails Investment Securities Contractual Maturities of Investment Securities (Details) Details 42 false false R43.htm 2401406 - Disclosure - Investment Securities Additional Information (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesAdditionalInformationDetails Investment Securities Additional Information (Details) Details 43 false false R44.htm 2401407 - Disclosure - Investment Securities Gains and Losses (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesGainsAndLossesDetails Investment Securities Gains and Losses (Details) Details 44 false false R45.htm 2401408 - Disclosure - Investment Securities Temporarily Impaired Securities (Details) Sheet http://www.thefirst.com/role/InvestmentSecuritiesTemporarilyImpairedSecuritiesDetails Investment Securities Temporarily Impaired Securities (Details) Details 45 false false R46.htm 2402402 - Disclosure - Loans - Loan Portfolio (Details) Sheet http://www.thefirst.com/role/LoansLoanPortfolioDetails Loans - Loan Portfolio (Details) Details 46 false false R47.htm 2402403 - Disclosure - Loans - Narrative (Details) Sheet http://www.thefirst.com/role/LoansNarrativeDetails Loans - Narrative (Details) Details 47 false false R48.htm 2402404 - Disclosure - Loans - Past-due Status of Loans by Class (Details) Sheet http://www.thefirst.com/role/LoansPastDueStatusOfLoansByClassDetails Loans - Past-due Status of Loans by Class (Details) Details 48 false false R49.htm 2402405 - Disclosure - Loans - Nonaccrual Loans (Details) Sheet http://www.thefirst.com/role/LoansNonaccrualLoansDetails Loans - Nonaccrual Loans (Details) Details 49 false false R50.htm 2402406 - Disclosure - Loans - Impaired Loans by Class (Details) Sheet http://www.thefirst.com/role/LoansImpairedLoansByClassDetails Loans - Impaired Loans by Class (Details) Details 50 false false R51.htm 2402407 - Disclosure - Loans - TDR's by Class and Specific Reserves (Details) Sheet http://www.thefirst.com/role/LoansTdrsByClassAndSpecificReservesDetails Loans - TDR's by Class and Specific Reserves (Details) Details 51 false false R52.htm 2402408 - Disclosure - Loans - TDR's by Class and the Associated Specific Reserves (Details) Sheet http://www.thefirst.com/role/LoansTdrsByClassAndAssociatedSpecificReservesDetails Loans - TDR's by Class and the Associated Specific Reserves (Details) Details 52 false false R53.htm 2404402 - Disclosure - Allowance for Loan Losses Narrative (Details) Sheet http://www.thefirst.com/role/AllowanceForLoanLossesNarrativeDetails Allowance for Loan Losses Narrative (Details) Details 53 false false R54.htm 2404403 - Disclosure - Allowance for Loan Losses - Financing Receivable and Allowance Element by Class (Details) Sheet http://www.thefirst.com/role/AllowanceForLoanLossesFinancingReceivableAndAllowanceElementByClassDetails Allowance for Loan Losses - Financing Receivable and Allowance Element by Class (Details) Details 54 false false R55.htm 2404404 - Disclosure - Allowance for Loan Losses - Risk Ratings by Segment (Details) Sheet http://www.thefirst.com/role/AllowanceForLoanLossesRiskRatingsBySegmentDetails Allowance for Loan Losses - Risk Ratings by Segment (Details) Details 55 false false R56.htm 2404405 - Disclosure - Allowance for Loan Losses - Allowance for Loan Loss Activity by Class (Details) Sheet http://www.thefirst.com/role/AllowanceForLoanLossesAllowanceForLoanLossActivityByClassDetails Allowance for Loan Losses - Allowance for Loan Loss Activity by Class (Details) Details 56 false false R57.htm 2405402 - Disclosure - Stock Options and Stock-Based Compensation - Narrative (Details) Sheet http://www.thefirst.com/role/StockOptionsAndStockBasedCompensationNarrativeDetails Stock Options and Stock-Based Compensation - Narrative (Details) Details 57 false false R58.htm 2405403 - Disclosure - Stock Options and Stock-Based Compensation - Shares of Restricted Stock Granted under 2010 Plan (Details) Sheet http://www.thefirst.com/role/StockOptionsAndStockBasedCompensationSharesOfRestrictedStockGrantedUnder2010PlanDetails Stock Options and Stock-Based Compensation - Shares of Restricted Stock Granted under 2010 Plan (Details) Details 58 false false R59.htm 2406401 - Disclosure - Preferred and Common Stock (Details) Sheet http://www.thefirst.com/role/PreferredAndCommonStockDetails Preferred and Common Stock (Details) Details http://www.thefirst.com/role/PreferredAndCommonStock 59 false false R60.htm 2407402 - Disclosure - Earnings Per Share (Details) Sheet http://www.thefirst.com/role/EarningsPerShareDetails Earnings Per Share (Details) Details http://www.thefirst.com/role/EarningsPerShareTables 60 false false R61.htm 2407403 - Disclosure - Earnings Per Share - Schedule of Options and Warrants Outstanding (Details) Sheet http://www.thefirst.com/role/EarningsPerShareScheduleOfOptionsAndWarrantsOutstandingDetails Earnings Per Share - Schedule of Options and Warrants Outstanding (Details) Details 61 false false R62.htm 2408402 - Disclosure - Employee Benefit Plans (Details) Sheet http://www.thefirst.com/role/EmployeeBenefitPlansDetails Employee Benefit Plans (Details) Details http://www.thefirst.com/role/EmployeeBenefitPlansTables 62 false false R63.htm 2408403 - Disclosure - Employee Benefit Plans, Accumulated Post-Retirement Benefit Obligation, Funded Status, and Net Periodic Benefit Cost (Details) Sheet http://www.thefirst.com/role/EmployeeBenefitPlansAccumulatedPostRetirementBenefitObligationFundedStatusAndNetPeriodicBenefitCostDetails Employee Benefit Plans, Accumulated Post-Retirement Benefit Obligation, Funded Status, and Net Periodic Benefit Cost (Details) Details 63 false false R64.htm 2408404 - Disclosure - Employee Benefit Plans, Schedule of Net Periodic Benefit Cost Not Yet Recognized (Details) Sheet http://www.thefirst.com/role/EmployeeBenefitPlansScheduleOfNetPeriodicBenefitCostNotYetRecognizedDetails Employee Benefit Plans, Schedule of Net Periodic Benefit Cost Not Yet Recognized (Details) Details 64 false false R65.htm 2409402 - Disclosure - Other Comprehensive Income (Loss) (Details) Sheet http://www.thefirst.com/role/OtherComprehensiveIncomeLossDetails Other Comprehensive Income (Loss) (Details) Details http://www.thefirst.com/role/OtherComprehensiveIncomeLossTables 65 false false R66.htm 2409403 - Disclosure - Other Comprehensive Income (Loss) - Reclassification of Available-for-Sale Securities to Held-to-Maturity Securities (Details) Sheet http://www.thefirst.com/role/OtherComprehensiveIncomeLossReclassificationOfAvailableForSaleSecuritiesToHeldToMaturitySecuritiesDetails Other Comprehensive Income (Loss) - Reclassification of Available-for-Sale Securities to Held-to-Maturity Securities (Details) Details http://www.thefirst.com/role/OtherComprehensiveIncomeLossTables 66 false false R67.htm 2409404 - Disclosure - Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) Sheet http://www.thefirst.com/role/OtherComprehensiveIncomeLossDerivativeInstrumentsIncludedInOtherComprehensiveIncomeLossDetails Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) Details http://www.thefirst.com/role/OtherComprehensiveIncomeLossTables 67 false false R68.htm 2409405 - Disclosure - Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) Sheet http://www.thefirst.com/role/OtherComprehensiveIncomeLossReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) Details http://www.thefirst.com/role/OtherComprehensiveIncomeLossTables 68 false false R69.htm 2410403 - Disclosure - Financial Derivative Instruments (Details) Sheet http://www.thefirst.com/role/FinancialDerivativeInstrumentsDetails Financial Derivative Instruments (Details) Details http://www.thefirst.com/role/FinancialDerivativeInstrumentsTables 69 false false R70.htm 2411402 - Disclosure - Mortgage Servicing Rights - Narrative (Details) Sheet http://www.thefirst.com/role/MortgageServicingRightsNarrativeDetails Mortgage Servicing Rights - Narrative (Details) Details 70 false false R71.htm 2411403 - Disclosure - Mortgage Servicing Rights Included in Other Assets (Details) Sheet http://www.thefirst.com/role/MortgageServicingRightsIncludedInOtherAssetsDetails Mortgage Servicing Rights Included in Other Assets (Details) Details 71 false false R72.htm 2413402 - Disclosure - Certificates of Deposit (Details) Sheet http://www.thefirst.com/role/CertificatesOfDepositDetails Certificates of Deposit (Details) Details http://www.thefirst.com/role/CertificatesOfDepositTables 72 false false R73.htm 2415402 - Disclosure - Fair Value - Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Details) Sheet http://www.thefirst.com/role/FairValueAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetails Fair Value - Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Details) Details 73 false false R74.htm 2415403 - Disclosure - Fair Value - Additional Information (Details) Sheet http://www.thefirst.com/role/FairValueAdditionalInformationDetails Fair Value - Additional Information (Details) Details 74 false false R75.htm 2415404 - Disclosure - Fair Value - Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis (Details) Sheet http://www.thefirst.com/role/FairValueAssetsAndLiabilitiesRecordedAtFairValueOnNonRecurringBasisDetails Fair Value - Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis (Details) Details 75 false false R76.htm 2415405 - Disclosure - Fair Value - Assets and Liabilities at Fair Value (Details) Sheet http://www.thefirst.com/role/FairValueAssetsAndLiabilitiesAtFairValueDetails Fair Value - Assets and Liabilities at Fair Value (Details) Details 76 false false All Reports Book All Reports fnlc-20160630.xml fnlc-20160630.xsd fnlc-20160630_cal.xml fnlc-20160630_def.xml fnlc-20160630_lab.xml fnlc-20160630_pre.xml true true