0001001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 1006007 - Statement - CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 1007008 - Statement - CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2202201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policy) link:presentationLink link:calculationLink link:definitionLink 2103102 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 2405401 - Disclosure - REVENUE RECOGNITION (Disaggregation of Revenue by Major Service Line) (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - REVENUE RECOGNITION (Deferred Revenue) (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - REVENUE RECOGNITION (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - REVENUE RECOGNITION (Remaining Performance Obligation) (Details) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - REVENUE RECOGNITION (Remaining Performance Obligation) (Details) link:presentationLink link:calculationLink link:definitionLink 2109103 - Disclosure - EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 2310302 - Disclosure - EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY (Computations of Basic and Diluted Earnings Per Share) (Details) link:presentationLink link:calculationLink link:definitionLink 2113104 - Disclosure - RECEIVABLES link:presentationLink link:calculationLink link:definitionLink 2314303 - Disclosure - RECEIVABLES (Tables) link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - RECEIVABLES (Schedule of Short-Term Receivables) (Details) link:presentationLink link:calculationLink link:definitionLink 2416408 - Disclosure - RECEIVABLES (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2417409 - Disclosure - RECEIVABLES (Schedule of Receivables Based on Year of Origination) (Details) link:presentationLink link:calculationLink link:definitionLink 2418410 - Disclosure - RECEIVABLES (Schedule of Activity in the Allowance For Doubtful Accounts) (Details) link:presentationLink link:calculationLink link:definitionLink 2119105 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 2320304 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 2421411 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill) (Details) link:presentationLink link:calculationLink link:definitionLink 2422412 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 2423413 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Intangible Assets Acquired) (Details) link:presentationLink link:calculationLink link:definitionLink 2424414 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2125106 - Disclosure - LONG-TERM DEBT link:presentationLink link:calculationLink link:definitionLink 2326305 - Disclosure - LONG-TERM DEBT LONG-TERM DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 2427415 - Disclosure - LONG-TERM DEBT (Components of Long-Term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 2427415 - Disclosure - LONG-TERM DEBT (Components of Long-Term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 2428416 - Disclosure - LONG-TERM DEBT (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2129107 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2430417 - Disclosure - INCOME TAXES (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2131108 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2432418 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 2133109 - Disclosure - LITIGATION AND OTHER RELATED CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2434419 - Disclosure - LITIGATION AND OTHER RELATED CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink