0000001 - Document - Cover page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - ORGANIZATION link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - ALLOWANCE FOR CREDIT LOSSES link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - INVESTMENTS AND FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - GOODWILL link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - LONG-TERM DEBT link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - NET INCOME PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - EMPLOYEE BENEFIT PLANS link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - ALLOWANCE FOR CREDIT LOSSES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - ACQUISITIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - PROPERTY AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - LONG-TERM DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - SEGMENT REPORTING (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - NET INCOME PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - ORGANIZATION (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Foreign Currency Translation and Accumulated Other Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advertising Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock-Based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Long-Lived Assets, Intangible Assets and Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leasing Operations and Other Income, Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recent Accounting Pronouncements (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregated Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Deferred Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Changes in Deferred Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Contract Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Commissions (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Unsatisfied Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Unsatisfied Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - ALLOWANCE FOR CREDIT LOSSES (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - ACQUISITIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - ACQUISITIONS - Recognized Identified Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - ACQUISITIONS - Intangible Assets Acquired (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - ACQUISITIONS - Pro Forma Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - INVESTMENTS AND FAIR VALUE MEASUREMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - LEASES - Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - LEASES - Supplemental Balance Sheet Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - LEASES - Supplemental Cash Flow Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - PROPERTY AND EQUIPMENT - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - PROPERTY AND EQUIPMENT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - GOODWILL - Goodwill by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - GOODWILL - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - INTANGIBLE ASSETS - Acquired Finite-Lived Intangible Assets by Major Class (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - LONG-TERM DEBT - Long-Term Debt Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - LONG-TERM DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - LONG-TERM DEBT - Interest Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - INCOME TAXES - Components for Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - INCOME TAXES - Reconciliation of Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - INCOME TAXES - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - SEGMENT REPORTING - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - SEGMENT REPORTING - Summarized EBITDA Information by Operating Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - SEGMENT REPORTING - Stock Based Compensation Included in the Personnel Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - SEGMENT REPORTING - Reconciliation of Income (Loss) to EBITDA (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - SEGMENT REPORTING - Summarized Information by Operating Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - STOCKHOLDERS' EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - NET INCOME PER SHARE - Calculation of Basic and Diluted Net Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - NET INCOME PER SHARE - Anti-Dilutive Securities Excluded From Computation of Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - EMPLOYEE BENEFIT PLANS - Stock Incentive Plans Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - EMPLOYEE BENEFIT PLANS - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - EMPLOYEE BENEFIT PLANS - Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - EMPLOYEE BENEFIT PLANS - Information Regarding Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - EMPLOYEE BENEFIT PLANS - Restrictive Stock Award Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - EMPLOYEE BENEFIT PLANS - Restrictive Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - EMPLOYEE BENEFIT PLANS - Matching RSU Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - EMPLOYEE BENEFIT PLANS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink