2107100 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALL link:presentationLink link:calculationLink link:definitionLink 2408403 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALL - Carrying Amount of the Liability Component (Details) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALL - Interest Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALL - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALL (Tables) link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 2401401 - Disclosure - DESCRIPTION OF BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 2403403 - Disclosure - FAIR VALUE MEASUREMENTS - Contractual Maturity of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 2403402 - Disclosure - FAIR VALUE MEASUREMENTS - Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 2403404 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - GEOGRAPHICAL INFORMATION link:presentationLink link:calculationLink link:definitionLink 2412403 - Disclosure - GEOGRAPHICAL INFORMATION - PPE (Details) link:presentationLink link:calculationLink link:definitionLink 2412402 - Disclosure - GEOGRAPHICAL INFORMATION - Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 2312301 - Disclosure - GEOGRAPHICAL INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2410401 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - INTANGIBLE ASSETS AND GOODWILL link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Carrying Value of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2404404 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Summary of Changes in Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 2411403 - Disclosure - NET LOSS PER SHARE - Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - NET LOSS PER SHARE - Earnings Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 2402404 - Disclosure - REVENUE RECOGNITION - Changes in Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 2402403 - Disclosure - REVENUE RECOGNITION - Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - REVENUE RECOGNITION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES - Components of Lease Right-of-Use Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2406405 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES - Maturity of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2406405 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES - Maturity of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2406404 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES - Supplemental Information (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - RIGHT-OF-USE ASSETS AND LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2409404 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - STOCK-BASED COMPENSATION - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2409403 - Disclosure - STOCK-BASED COMPENSATION - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 2413401 - Disclosure - SUBSEQUENT EVENTS SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2401402 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink