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Unrealized Holding Gain (Loss), before Adjustment and Tax Due within one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Subsequent Event Type [Domain] Subsequent Event Type [Domain] Retained earnings Retained Earnings [Member] Forfeited or expired during the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Revolving Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Unrealized Loss on Securities Available for Sale AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Guaranteed portions of SBA loans included in table above Small Business Administration, Guaranteed Portion [Member] Small Business Administration, Guaranteed Portion [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Schedule of the Carrying Amounts and Estimated Fair Values of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Corporate bonds Corporate Debt Securities [Member] Diluted (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Trust Preferred Securities Due January 7, 2035 Trust Preferred Securities Due January 7, 2035 [Member] Trust Preferred Securities Due January 7, 2035 Fair value, AFS and HTM Debt Securities, Available-For-Sale And Held-To-Maturity, Continuous Unrealized Loss Position Debt Securities, Available-For-Sale And Held-To-Maturity, Continuous Unrealized Loss Position Stock withheld for payment of taxes Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Intangibles amortization expense Amortization of intangible assets Less: Amortization expense and impairment charges Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] 2023 Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Reconciliation of net income to net cash provided by operating activities: Adjustment to 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Stock in rabbi trust assumed in acquisition Stock In Rabbi Trust Assumed In Acquisition [Member] Stock In Rabbi Trust Assumed In Acquisition Financial Instruments [Domain] Financial Instruments [Domain] 2022 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Commercial real estate - non owner occupied Commercial Real Estate - Non Owner Occupied [Member] Commercial Real Estate - Non Owner Occupied Other service charges and fees Other Income Derivative financial assets Derivative Asset Stock repurchases Stock Repurchased During Period, Value Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Securities in an Unrealized Loss Position for Less than Twelve Months Debt Securities, Continuous Unrealized Loss Position, Less Than 12 Months [Abstract] Debt Securities, Continuous Unrealized Loss Position, Less Than 12 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income Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Government-sponsored enterprise securities US Government-sponsored Enterprises Debt Securities [Member] Cash Flows From Financing Activities Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Document Type Document Type Trust Preferred Securities Due June 23, 2036 Trust Preferred Securities Due June 23, 2036 [Member] Trust Preferred Securities Due June 23, 2036 Due after ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Rabbi trust obligation Rabbi Trust Obligation [Member] Rabbi Trust Obligation Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Local Phone Number Local Phone Number Gains on sale of loans Fees And Gains From Sale Of Presold Mortgage And SBA Loans Fees/gains from sales of presold mortgages and SBA loans. 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Asset Pledged as Collateral Asset Pledged as Collateral [Member] Supplemental Disclosures of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Share-Based Payment Arrangement, Period Of Recognition [Axis] Share-Based Payment Arrangement, Period Of Recognition [Axis] Share-Based Payment Arrangement, Period Of Recognition [Axis] PEO Name PEO Name Geographical [Axis] Geographical [Axis] Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Interest-bearing deposits Interest-Bearing Domestic Deposit, Checking Cash transaction value Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value Other assets Other Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Accruing 30-59 Days Past Due Commercial Property Financial Asset, 30 to 59 Days Past Due [Member] Entity Tax Identification Number Entity Tax Identification Number Cash and due from banks, noninterest-bearing Cash and Due from Banks Legal Entity [Axis] Legal Entity [Axis] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Schedule of Analysis of Payment Status Financing Receivable, Past Due [Table Text Block] Accruing Current Financial Asset, Not Past Due [Member] Stock-based compensation tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Share-Based Payment Arrangement, Period Of Recognition [Domain] Share-Based Payment Arrangement, Period Of Recognition [Domain] [Domain] for Share-Based Payment Arrangement, Period Of Recognition [Axis] Noninterest Income Noninterest Income [Abstract] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Presold mortgage loan fees and gains on sale Fees From Pre-Sold Mortgage Loans Fees from presold mortgage loans. Customer lists Customer Lists [Member] Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Number of securities Debt Securities, Available-For-Sale And Held-To-Maturity, Number Of Positions Debt Securities, Available-For-Sale And Held-To-Maturity, Number Of Positions Bank-owned life insurance income Bank-owned life insurance income Bank Owned Life Insurance Income Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Number of locations Number of Locations Number of Locations Interest Expense Interest Expense, Operating and Nonoperating [Abstract] Total personnel expense Labor and Related Expense Fair Value Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract] Number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Net (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Multi-family real estate Multi-Family Real Estate [Member] Multi-Family Real Estate Schedule of Debt Schedule of Debt [Table Text Block] Leases Lessee, Operating Leases [Text Block] Proceeds from maturities, calls and principal repayments of securities held to maturity Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Due after five years but within ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Basic (in dollars per share) Earnings Per Share, Basic Sold portions of SBA loans with servicing retained - not included in tables above Small Business Administration Loan, Sold Portion [Member] Small Business Administration Loan, Sold Portion [Member] Repurchases of common stock Payments for Repurchase of Common Stock Mortgage-backed securities Collateralized Mortgage-Backed Securities [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Commissions from sales of financial products Investment Banking Revenue Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Securities available-for-sale amortized cost Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Retained earnings Retained Earnings (Accumulated Deficit) Consumer loans Consumer Portfolio Segment [Member] Bank-owned life insurance Bank Owned Life Insurance Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] 2022 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Cover [Abstract] Cover [Abstract] Remaining Quarters of 2026 Recognition Period Two [Member] Recognition Period Two [Member] 2025 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Percentage Concentration risk percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Land and Building Land and Building [Member] Equity Awards Adjustments Equity Awards Adjustments [Member] Other income, net Other Nonoperating Gains (Losses) Total liabilities and shareholders’ equity Liabilities and Equity Carolina Bank Carolina Bank [Member] Carolina Bank Employee Stock Option Share-Based Payment Arrangement, Option [Member] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Pass Pass [Member] Plan Name [Axis] Plan Name [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] Portion of other income in-scope of ASC 606 SBA Consulting Fees SBA consulting fees. Schedule of Major Categories of Total Loans Outstanding Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] First Bancorp 2014 Equity Plan First Bancorp 2014 Equity Plan [Member] Represents information pertaining to First Bancorp 2014 Equity Plan of entity. Tabular List, Table Tabular List [Table Text Block] Amortizable intangible assets: Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] Trust Preferred Securities Due January 23, 2034 Trust Preferred Securities Due January 23, 2034 [Member] Trust Preferred Securities Due January 23, 2034 Unusual Risk or Uncertainty, Nature [Axis] Unusual Risk or Uncertainty, Nature [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited or expired during the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Total Debt Securities, Continuous Unrealized Loss Position [Abstract] Debt Securities, Continuous Unrealized Loss Position [Abstract] Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Combination - Term Extension and Payment Delay Extended Maturity and Payment Delay [Member] Extended Maturity and Payment Delay Private mortgage-backed security fair value Private Mortgage-Backed Security, Fair Value Private mortgage-backed security fair value. Interest and fees on loans Interest and Fee Income, Financing Receivable, Held-in-Portfolio Preferred stock Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid during the period for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Accruing 60-89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Origination of presold mortgage loans and SBA loans held for sale Origination Of Pre-Sold Mortgage Loans In Process Of Settlement Origination of pre-sold mortgages in process of settlement. Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Unrealized losses, AFS and HTM Debt Securities, Available-For-Sale And Held-To-Maturity, Continuous Unrealized Loss Position, Less Than 12 Months, Accumulated Loss Debt Securities, Available-For-Sale And Held-To-Maturity, Continuous Unrealized Loss Position, Less Than 12 Months, Accumulated Loss Name Measure Name Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Consideration transferred Business Combination, Consideration Transferred Entity Filer Category Entity Filer Category Fair value, AFS Debt Securities, Available-for-Sale, Unrealized Loss Position Goodwill impairment Goodwill, Impairment Loss Non-cash: Foreclosed loans transferred to foreclosed real estate Real Estate Owned, Transfer from Real Estate Owned Accrued interest receivable Interest Receivable Name Trading Arrangement, Individual Name Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Organization and Basis of Presentation Basis of Accounting [Text Block] Schedule of SBA Servicing Assets SBA Servicing Assets [Table Text Block] SBA Servicing Assets Total operating lease expense Operating Lease, Expense Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Financing receivable, allowance for credit loss to outstanding, percent Financing Receivable, Allowance for Credit Loss to Outstanding, Percent Unused lines of Credit Unused lines of Credit [Member] Stock-based compensation (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Derivative financial liabilities Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Amortization of unrecognized net actuarial losses Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Entity Address, Address Line One Entity Address, Address Line One Impairment of servicing assets Intangible Asset, Finite-Lived, Impairment Loss Vested during the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Income tax expense Income Tax Expense (Benefit) Total noninterest expenses Noninterest Expense Unamortized discount on acquired loans Financing Receivable, Unamortized Purchase Premium (Discount) Award Timing Method Award Timing Method [Text Block] Increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Charge-offs Total Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Accrued interest on available for sale debt securities Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Mortgage-backed securities Debt Securities, Held-to-Maturity, Maturity, without Single Maturity Date, Fair Value AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income Net income Net income Net Income (Loss) Attributable to Parent Commercial real estate - owner occupied Commercial Real Estate - Owner Occupied [Member] Commercial Real Estate - Owner Occupied Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Statement [Table] Statement [Table] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Total SBA loans included in the table above Small Business Administration Loan [Member] Small Business Administration Loan [Member] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from stock option exercises Proceeds from Stock Options Exercised Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] 2025 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Schedule of Nonperforming Assets and Nonaccrual Loans Financing Receivable, Nonaccrual [Table Text Block] Intangible Assets Excluding Servicing Assets Intangible Assets Excluding Servicing Assets [Member] Intangible Assets Excluding Servicing Assets Servicing Contracts Servicing Contracts [Member] Long-Term Restricted Stock Awards Long-Term Restricted Stock Awards [Member] Long Term Restricted Stock Member Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]