000100 - Document - Document and Entity Information link:calculationLink link:definitionLink link:presentationLink 000200 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION link:calculationLink link:definitionLink link:presentationLink 000300 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) link:calculationLink link:definitionLink link:presentationLink 000400 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:calculationLink link:definitionLink link:presentationLink 000500 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:calculationLink link:definitionLink link:presentationLink 000600 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:calculationLink link:definitionLink link:presentationLink 000700 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY link:calculationLink link:definitionLink link:presentationLink 010101 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES link:calculationLink link:definitionLink link:presentationLink 010801 - Disclosure - EARNINGS PER COMMON SHARE link:calculationLink link:definitionLink link:presentationLink 010901 - Disclosure - STOCK-BASED COMPENSATION link:calculationLink link:definitionLink link:presentationLink 010201 - Disclosure - DEBT SECURITIES link:calculationLink link:definitionLink link:presentationLink 010301 - Disclosure - LOANS HELD FOR INVESTMENT link:calculationLink link:definitionLink link:presentationLink 010601 - Disclosure - DEPOSITS link:calculationLink link:definitionLink link:presentationLink 010701 - Disclosure - BORROWINGS link:calculationLink link:definitionLink link:presentationLink 011001 - Disclosure - STOCKHOLDERS' EQUITY link:calculationLink link:definitionLink link:presentationLink 011301 - Disclosure - INCOME TAXES link:calculationLink link:definitionLink link:presentationLink 011401 - Disclosure - FAIR VALUE link:calculationLink link:definitionLink link:presentationLink 011701 - Disclosure - SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION link:calculationLink link:definitionLink link:presentationLink 011601 - Disclosure - SEGMENT INFORMATION link:calculationLink link:definitionLink link:presentationLink 011801 - Disclosure - REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES link:calculationLink link:definitionLink link:presentationLink 011901 - Disclosure - FIRST BANCORP. (Holding Company Only) Financial Information link:calculationLink link:definitionLink link:presentationLink 030803 - Disclosure - EARNINGS PER COMMON SHARE (Tables) link:calculationLink link:definitionLink link:presentationLink 030903 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:calculationLink link:definitionLink link:presentationLink 030203 - Disclosure - DEBT SECURITIES (Tables) link:calculationLink link:definitionLink link:presentationLink 030303 - Disclosure - LOANS HELD FOR INVESTMENT (Tables) link:calculationLink link:definitionLink link:presentationLink 030403 - Disclosure - ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES (Tables) link:calculationLink link:definitionLink link:presentationLink 030603 - Disclosure - DEPOSITS (Tables) link:calculationLink link:definitionLink link:presentationLink 030703 - Disclosure - BORROWINGS (Tables) link:calculationLink link:definitionLink link:presentationLink 031403 - Disclosure - FAIR VALUE (Tables) link:calculationLink link:definitionLink link:presentationLink 031703 - Disclosure - SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION (Tables) link:calculationLink link:definitionLink link:presentationLink 031603 - Disclosure - SEGMENT INFORMATION (Tables) link:calculationLink link:definitionLink link:presentationLink 031903 - Disclosure - FIRST BANCORP. (Holding Company Only) Financial Information (Tables) link:calculationLink link:definitionLink link:presentationLink 040801 - Disclosure - EARNINGS PER COMMON SHARE - Calculations of Earnings Per Common Share (Details) link:calculationLink link:definitionLink link:presentationLink 040901 - Disclosure - STOCK-BASED COMPENSATION - Omnibus Plan - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040903 - Disclosure - STOCK-BASED COMPENSATION - Restricted Stock Activity Under Omnibus Plan (Details) link:calculationLink link:definitionLink link:presentationLink 040202 - Disclosure - DEBT SECURITIES - Available-for-Sale Investments Classified by Contractual Maturity Date (Details) link:calculationLink link:definitionLink link:presentationLink 040201 - Disclosure - DEBT SECURITIES - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040203 - Disclosure - DEBT SECURITIES - Available-for-Sale Investments Fair Value and Gross Unrealized Losses (Details) link:calculationLink link:definitionLink link:presentationLink 040301 - Disclosure - LOANS HELD FOR INVESTMENT - Loan Portfolio Held for Investment (Details) link:calculationLink link:definitionLink link:presentationLink 040303 - Disclosure - LOANS HELD FOR INVESTMENT - Corporation's Aging of Loans Held for Investment Portfolio (Details) link:calculationLink link:definitionLink link:presentationLink 040304 - Disclosure - LOANS HELD FOR INVESTMENT - Corporation's Aging of Loans Held for Investment Portfolio (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 040309 - Disclosure - LOANS HELD FOR INVESTMENT - Selected Information on TDRs includes Recorded Investment by Loan Class and Modification Type (Details) link:calculationLink link:definitionLink link:presentationLink 040312 - Disclosure - LOANS HELD FOR INVESTMENT - Loan Modifications Considered TDRs (Details) link:calculationLink link:definitionLink link:presentationLink 040313 - Disclosure - LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Details) link:calculationLink link:definitionLink link:presentationLink 040401 - Disclosure - ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040602 - Disclosure - DEPOSITS - Summary of Deposit Balances (Details) link:calculationLink link:definitionLink link:presentationLink 040702 - Disclosure - BORROWINGS - Summary of Advances from FHLB (Details) link:calculationLink link:definitionLink link:presentationLink 040703 - Disclosure - BORROWINGS - Summary of Advances from FHLB (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 040704 - Disclosure - BORROWINGS - Advances from FHLB Mature (Details) link:calculationLink link:definitionLink link:presentationLink 041001 - Disclosure - STOCKHOLDERS' EQUITY - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041301 - Disclosure - INCOME TAXES - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041401 - Disclosure - FAIR VALUE - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041402 - Disclosure - FAIR VALUE - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 041403 - Disclosure - FAIR VALUE - Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 041405 - Disclosure - FAIR VALUE - Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) link:calculationLink link:definitionLink link:presentationLink 041407 - Disclosure - FAIR VALUE - Impairment of Valuation Adjustments were Recorded for Assets Recognized at Fair Value (Details) link:calculationLink link:definitionLink link:presentationLink 041406 - Disclosure - FAIR VALUE - Qualitative Information Regarding Fair Value Measurements for Level 3 Financial Instruments (Details) link:calculationLink link:definitionLink link:presentationLink 041408 - Disclosure - FAIR VALUE - Estimated Fair Value and Carrying Value of Financial Instruments (Details) link:calculationLink link:definitionLink link:presentationLink 041701 - Disclosure - SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION - Supplemental Cash Flow Information (Details) link:calculationLink link:definitionLink link:presentationLink 041601 - Disclosure - SEGMENT INFORMATION - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041602 - Disclosure - SEGMENT INFORMATION - Information by Segment (Details) link:calculationLink link:definitionLink link:presentationLink 041603 - Disclosure - SEGMENT INFORMATION - Reconciliation of the Reportable Segment Financial Information (Details) link:calculationLink link:definitionLink link:presentationLink 041801 - Disclosure - REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041901 - Disclosure - FIRST BANCORP. (Holding Company Only) Financial Information - Statements of Financial Condition (Details) link:calculationLink link:definitionLink link:presentationLink 041902 - Disclosure - FIRST BANCORP. (Holding Company Only) Financial Information - Statements of Income (Details) link:calculationLink link:definitionLink link:presentationLink 020102 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies) link:calculationLink link:definitionLink link:presentationLink 011201 - Disclosure - EMPLOYEE BENEFIT PLANS link:calculationLink link:definitionLink link:presentationLink 031803 - Disclosure - REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES (Tables) link:calculationLink link:definitionLink link:presentationLink 040601 - Disclosure - DEPOSITS - Narratives (Details) link:calculationLink link:definitionLink link:presentationLink 041802 - Disclosure - REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Regulatory Capital Positions (Details) link:calculationLink link:definitionLink link:presentationLink 040302 - Disclosure - LOANS HELD FOR INVESTMENT - Loan Portfolio Held for Investment (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 030503 - Disclosure - OTHER REAL ESTATE OWNED (OREO) (Tables) link:calculationLink link:definitionLink link:presentationLink 040501 - Disclosure - OTHER REAL ESTATE OWNED (OREO) - Other Real Estate Owned (Details) link:calculationLink link:definitionLink link:presentationLink 010501 - Disclosure - OTHER REAL ESTATE OWNED (OREO) link:calculationLink link:definitionLink link:presentationLink 040208 - Disclosure - DEBT SECURITIES - Held-to-Maturity Investments Classified by Contractual Maturity Date (Details) link:calculationLink link:definitionLink link:presentationLink 040603 - Disclosure - DEPOSITS - Contractual Maturities of Time Deposits Including Brokered CDs (Details) link:calculationLink link:definitionLink link:presentationLink 040209 - Disclosure - DEBT SECURITIES - Held-to-Maturity Investments Fair Value and Gross Unrealized Losses (Details) link:calculationLink link:definitionLink link:presentationLink 031103 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) link:calculationLink link:definitionLink link:presentationLink 031503 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables) link:calculationLink link:definitionLink link:presentationLink 011501 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS link:calculationLink link:definitionLink link:presentationLink 011101 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS link:calculationLink link:definitionLink link:presentationLink 040403 - Disclosure - ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Carrying Amount of Portfolios (Details) link:calculationLink link:definitionLink link:presentationLink 041101 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS - Change in Accumulated Other Comprehensive Loss by Component (Details) link:calculationLink link:definitionLink link:presentationLink 041502 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) link:calculationLink link:definitionLink link:presentationLink 040902 - Disclosure - STOCK-BASED COMPENSATION - Restricted Stock - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040905 - Disclosure - STOCK-BASED COMPENSATION - Performance Units - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041803 - Disclosure - REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Summary of Commitments (Details) link:calculationLink link:definitionLink link:presentationLink 000705 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) link:calculationLink link:definitionLink link:presentationLink 041504 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Activity of Contract Liability (Details) link:calculationLink link:definitionLink link:presentationLink 040305 - Disclosure - LOANS HELD FOR INVESTMENT - Corporation's Commercial and Construction Loans by Portfolio Classes and by Origination Year Based on the Internal Credit Risk Category (Details) link:calculationLink link:definitionLink link:presentationLink 040306 - Disclosure - LOANS HELD FOR INVESTMENT - Corporation's Residential Mortgage Loans By Origination Year Based on Accrual Status (Details) link:calculationLink link:definitionLink link:presentationLink 040307 - Disclosure - LOANS HELD FOR INVESTMENT - Corporation's Consumer Loans by Origination Year Based on Accrual Status (Details) link:calculationLink link:definitionLink link:presentationLink 040308 - Disclosure - LOANS HELD FOR INVESTMENT - Collateral Dependent Loans Individually Evaluated For Purposes of Determining the ACL (Details) link:calculationLink link:definitionLink link:presentationLink 040402 - Disclosure - ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Activity in ACL on Loans and Finance Leases (Details) link:calculationLink link:definitionLink link:presentationLink 040404 - Disclosure - ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Activity in ACL for Unfunded Loan Commitments and Standby Letters of Credit (Details) link:calculationLink link:definitionLink link:presentationLink 010401 - Disclosure - ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES link:calculationLink link:definitionLink link:presentationLink 040205 - Disclosure - DEBT SECURITIES - ACL on Available-for-Sale Debt Securities (Details) link:calculationLink link:definitionLink link:presentationLink 040210 - Disclosure - DEBT SECURITIES - ACL on Held-to-Maturity Debt Securities (Details) link:calculationLink link:definitionLink link:presentationLink 041204 - Disclosure - EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit (Details) link:calculationLink link:definitionLink link:presentationLink 031203 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) link:calculationLink link:definitionLink link:presentationLink 040906 - Disclosure - STOCK-BASED COMPENSATION - Performance Units - Performance Unit Activity (Details) link:calculationLink link:definitionLink link:presentationLink 040907 - Disclosure - STOCK-BASED COMPENSATION - Other Awards - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041002 - Disclosure - STOCKHOLDERS' EQUITY - Changes In Shares Of Common Stock (Details) link:calculationLink link:definitionLink link:presentationLink 041003 - Disclosure - STOCKHOLDERS' EQUITY - Changes In Shares Of Common Stock (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 031003 - Disclosure - STOCKHOLDERS' EQUITY (Tables) link:calculationLink link:definitionLink link:presentationLink 040909 - Disclosure - STOCK-BASED COMPENSATION - Treasury Stock - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040904 - Disclosure - STOCK-BASED COMPENSATION - Restricted Stock Activity Under Omnibus Plan (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 040802 - Disclosure - EARNINGS PER COMMON SHARE - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 041004 - Disclosure - STOCKHOLDERS' EQUITY - Changes In Treasury Stock (Details) link:calculationLink link:definitionLink link:presentationLink 040310 - Disclosure - LOANS HELD FOR INVESTMENT - Financial Effects of the Permanent Modifications Granted to Borrowers Experiencing Financial Difficulty (Details) link:calculationLink link:definitionLink link:presentationLink 040311 - Disclosure - LOANS HELD FOR INVESTMENT - Performance of Loans Modified During Period (Details) link:calculationLink link:definitionLink link:presentationLink 040908 - Disclosure - STOCK-BASED COMPENSATION - Summary of Valuation Assumptions (Details) link:calculationLink link:definitionLink link:presentationLink 041404 - Disclosure - FAIR VALUE - Fair Value of Assets and Liabilities Measured on Recurring Basis (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 012901 - Disclosure - Insider Trading Arrangements link:calculationLink link:definitionLink link:presentationLink 040705 - Disclosure - BORROWINGS - Advances from FHLB Mature (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 040315 - Disclosure - LOANS HELD FOR INVESTMENT - Additional Information I (Details) link:calculationLink link:definitionLink link:presentationLink 041501 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040316 - Disclosure - LOANS HELD FOR INVESTMENT - Additional Information II (Details) link:calculationLink link:definitionLink link:presentationLink 040317 - Disclosure - LOANS HELD FOR INVESTMENT - Additional Information III (Details) link:calculationLink link:definitionLink link:presentationLink 040318 - Disclosure - LOANS HELD FOR INVESTMENT - Additional Information IV (Details) link:calculationLink link:definitionLink link:presentationLink 040319 - Disclosure - LOANS HELD FOR INVESTMENT - Additional Information V (Details) link:calculationLink link:definitionLink link:presentationLink 041503 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 040502 - Disclosure - OTHER REAL ESTATE OWNED (OREO) - Other Real Estate Owned (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 041604 - Disclosure - SEGMENT INFORMATION - Revenues and Selected Balance Sheet Data by Geography (Details) link:calculationLink link:definitionLink link:presentationLink 041605 - Disclosure - SEGMENT INFORMATION - Revenues and Selected Balance Sheet Data by Geography (Parenthetical) (Details) link:calculationLink link:definitionLink link:presentationLink 041201 - Disclosure - EMPLOYEE BENEFIT PLANS - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink 040701 - Disclosure - BORROWINGS - Advances from the Federal Home Loan Bank (FHLB) - Additional Information (Details) link:calculationLink link:definitionLink link:presentationLink