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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 2304301 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2405401 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of reconciliation of the allowance for doubtful accounts (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of depreciation period for each asset category (Details ) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 2409405 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of effect of new accounting pronouncements (Details) link:presentationLink link:calculationLink link:definitionLink 2110103 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 2311302 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - REVENUE (Details) link:presentationLink link:calculationLink link:definitionLink 2113104 - Disclosure - CASH AND RESTRICTED CASH link:presentationLink link:calculationLink link:definitionLink 2314303 - Disclosure - CASH AND RESTRICTED CASH (Tables) link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - CASH AND RESTRICTED CASH (Details) link:presentationLink link:calculationLink link:definitionLink 2116105 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 2317304 - 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Disclosure - GOODWILL AND INTANGIBLE ASSETS - Goodwill and Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2426412 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Definite Lived Intangibles (Details) link:presentationLink link:calculationLink link:definitionLink 2427413 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Definite Lived Intangibles Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 2128108 - Disclosure - EQUITY INVESTMENT link:presentationLink link:calculationLink link:definitionLink 2429414 - Disclosure - EQUITY INVESTMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2130109 - Disclosure - BUSINESS ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 2331307 - Disclosure - BUSINESS ACQUISITIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 2432415 - Disclosure - BUSINESS ACQUISITIONS - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 2433416 - Disclosure - BUSINESS ACQUISITION (Details - Changes in Contingent Consideration) link:presentationLink link:calculationLink link:definitionLink 2434417 - Disclosure - BUSINESS ACQUISITIONS (Details - Schedule of Purchase Price Allocation) link:presentationLink link:calculationLink link:definitionLink 2435418 - Disclosure - BUSINESS ACQUISITIONS (Details - Schedule of Finite Lived Intangible Assets Acquired) link:presentationLink link:calculationLink link:definitionLink 2436419 - Disclosure - BUSINESS ACQUISITIONS (Details - Pro Forma Information) link:presentationLink link:calculationLink link:definitionLink 2137110 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES link:presentationLink link:calculationLink link:definitionLink 2338308 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2439420 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2140111 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 2341309 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 2442421 - Disclosure - LEASES (Details) link:presentationLink link:calculationLink link:definitionLink 2143112 - Disclosure - SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 2344310 - Disclosure - SHAREHOLDERS' EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 2445422 - Disclosure - SHAREHOLDERS' EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 2146113 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2347311 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2448423 - Disclosure - STOCK-BASED COMPENSATION - Plan Information and P&L Impact (Details) link:presentationLink link:calculationLink link:definitionLink 2449424 - Disclosure - STOCK-BASED COMPENSATION - Schedule of non-cash compensation expense related to equity awards (Details) link:presentationLink link:calculationLink link:definitionLink 2450425 - Disclosure - STOCK-BASED COMPENSATION - Schedules - Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 2451426 - Disclosure - STOCK-BASED COMPENSATION - Narrative - Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 2452427 - Disclosure - STOCK-BASED COMPENSATION - RSU and RSA Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2153114 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2354312 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 2455428 - Disclosure - INCOME TAXES (Details - Income Tax Provision Components) link:presentationLink link:calculationLink link:definitionLink 2456429 - Disclosure - INCOME TAXES (Details - Income Tax Reconciliation when Applying the Statutory Federal Tax Rate) link:presentationLink link:calculationLink link:definitionLink 2457430 - Disclosure - INCOME TAXES (Details - Deferred Income Taxes - Components) link:presentationLink link:calculationLink link:definitionLink 2458431 - Disclosure - INCOME TAXES (Details - Deferred Income Taxes - BS Presentation) link:presentationLink link:calculationLink link:definitionLink 2459432 - Disclosure - INCOME TAXES (Details - Valuation Allowance) link:presentationLink link:calculationLink link:definitionLink 2460433 - Disclosure - INCOME TAXES (Details - Unrecognized Tax Benefits) link:presentationLink link:calculationLink link:definitionLink 2161115 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 2362313 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 2463434 - Disclosure - DEBT (Convertible Senior Notes) (Details) link:presentationLink link:calculationLink link:definitionLink 2464435 - Disclosure - DEBT (Convertible Note Hedge and Warrant Transactions) (Details) link:presentationLink link:calculationLink link:definitionLink 2465436 - Disclosure - DEBT (Senior Secured Revolving Credit Facility) (Details) link:presentationLink link:calculationLink link:definitionLink 2166116 - Disclosure - COMMITMENTS link:presentationLink link:calculationLink link:definitionLink 2367314 - Disclosure - COMMITMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2468437 - Disclosure - COMMITMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2169117 - Disclosure - CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2470438 - Disclosure - CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 2171118 - Disclosure - FAIR VALUE MEASUREMENT link:presentationLink link:calculationLink link:definitionLink 2372315 - Disclosure - FAIR VALUE MEASUREMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 2473439 - Disclosure - FAIR VALUE MEASUREMENT - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 2474440 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of fair value measurement valuation (Details) link:presentationLink link:calculationLink link:definitionLink 2175119 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 2476441 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2177120 - Disclosure - BENEFIT PLANS link:presentationLink link:calculationLink link:definitionLink 2478442 - Disclosure - BENEFIT PLANS (Details) link:presentationLink link:calculationLink link:definitionLink 2179121 - Disclosure - DISCONTINUED OPERATIONS link:presentationLink link:calculationLink link:definitionLink 2380316 - Disclosure - DISCONTINUED OPERATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 2481443 - Disclosure - DISCONTINUED OPERATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2482444 - Disclosure - DISCONTINUED OPERATIONS - Schedule of financial information (Details) link:presentationLink link:calculationLink link:definitionLink 2183122 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 2384317 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2485445 - Disclosure - SEGMENT INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink