0001001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - ORGANIZATION link:presentationLink link:calculationLink link:definitionLink 2102102 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2203201 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2104103 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 2406401 - Disclosure - REVENUE - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2108104 - Disclosure - CASH AND RESTRICTED CASH link:presentationLink link:calculationLink link:definitionLink 2309302 - Disclosure - CASH AND RESTRICTED CASH (Tables) link:presentationLink link:calculationLink link:definitionLink 2410403 - Disclosure - CASH AND RESTRICTED CASH (Details) link:presentationLink link:calculationLink link:definitionLink 2111105 - Disclosure - ALLOWANCE FOR DOUBTFUL ACCOUNTS link:presentationLink link:calculationLink link:definitionLink 2312303 - Disclosure - ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) link:presentationLink link:calculationLink link:definitionLink 2114106 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 2315304 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 2416405 - Disclosure - GOODWILL AND INTANGIBLE ASSETS- Schedule of balance of intangible assets, net (Details ) link:presentationLink link:calculationLink link:definitionLink 2417406 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2418407 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Schedule of intangible assets with definite lives (Details) link:presentationLink link:calculationLink link:definitionLink 2419408 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Schedule of amortization of intangible assets with definite lives for the next five years (Details) link:presentationLink link:calculationLink link:definitionLink 2120107 - Disclosure - EQUITY INVESTMENT link:presentationLink link:calculationLink link:definitionLink 2421409 - Disclosure - EQUITY INVESTMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2122108 - Disclosure - BUSINESS ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 2323305 - Disclosure - BUSINESS ACQUISITIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 2424410 - Disclosure - BUSINESS ACQUISITIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2125109 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES link:presentationLink link:calculationLink link:definitionLink 2326306 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2427411 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2128110 - Disclosure - SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 2329307 - Disclosure - SHAREHOLDERS' EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 2430412 - Disclosure - SHAREHOLDERS' EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 2131111 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2332308 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2433413 - Disclosure - STOCK-BASED COMPENSATION - Schedule of non-cash compensation expense related to equity awards (Details ) link:presentationLink link:calculationLink link:definitionLink 2434414 - Disclosure - STOCK-BASED COMPENSATION - Summary of stock options and stock options with market conditions (Details) link:presentationLink link:calculationLink link:definitionLink 2435415 - Disclosure - STOCK-BASED COMPENSATION - Summary of RSA & RSU (Details) link:presentationLink link:calculationLink link:definitionLink 2136112 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2337309 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 2438416 - Disclosure - INCOME TAXES - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 2439417 - Disclosure - INCOME TAXES - Reconciliation of income tax (expense) benefit (Details) link:presentationLink link:calculationLink link:definitionLink 2140113 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 2341310 - Disclosure - DEBT (Table) link:presentationLink link:calculationLink link:definitionLink 2442418 - Disclosure - DEBT - Convertible Senior Notes Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2443419 - Disclosure - DEBT - Components of Notes (Details) link:presentationLink link:calculationLink link:definitionLink 2444420 - Disclosure - DEBT - Convertible Note Hedge and Warrant Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 2445421 - Disclosure - DEBT - Revolving Credit Facility (Details) link:presentationLink link:calculationLink link:definitionLink 2146114 - Disclosure - CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2447422 - Disclosure - CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 2148115 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 2349311 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2450423 - Disclosure - FAIR VALUE MEASUREMENTS - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 2451424 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of fair value measurement valuation (Details) link:presentationLink link:calculationLink link:definitionLink 2152116 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 2353312 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2454425 - Disclosure - SEGMENT INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 2155117 - Disclosure - DISCONTINUED OPERATIONS link:presentationLink link:calculationLink link:definitionLink 2356313 - Disclosure - DISCONTINUED OPERATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 2457426 - Disclosure - DISCONTINUED OPERATIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2458427 - Disclosure - DISCONTINUED OPERATIONS - Schedule of discontinued operations financial information (Details) link:presentationLink link:calculationLink link:definitionLink