0001001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2202201 - Disclosure - THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2403401 - Disclosure - THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2104102 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - REVENUE RECOGNITION - Contract Balances (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 - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 2310302 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - FAIR VALUE MEASUREMENTS - Cash, Cash Equivalents and Investments with Hierarchy (Details) link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - FAIR VALUE MEASUREMENTS - Cash, Cash Equivalents and Investments with Hierarchy (Details) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2113104 - Disclosure - INTANGIBLE ASSETS AND GOODWILL link:presentationLink link:calculationLink link:definitionLink 2314303 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - INTANGIBLE ASSETS AND GOODWILL- Schedule Of Intangibles (Details) link:presentationLink link:calculationLink link:definitionLink 2416408 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2417409 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule Of Future Amortization Of Intangibles (Details) link:presentationLink link:calculationLink link:definitionLink 2418410 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Changes in Carrying Amount of Goodwill by Location (Details) link:presentationLink link:calculationLink link:definitionLink 2119105 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 2320304 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 2421411 - Disclosure - LEASES - Components of Lease Right-of-Use Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2422412 - Disclosure - LEASES - Operating Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2423413 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2424414 - Disclosure - LEASES - Supplemental Information (Details) link:presentationLink link:calculationLink link:definitionLink 2425415 - Disclosure - LEASES - Maturity of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2425415 - Disclosure - LEASES - Maturity of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2126106 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2427416 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 2128107 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALLS link:presentationLink link:calculationLink link:definitionLink 2329305 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALLS (Tables) link:presentationLink link:calculationLink link:definitionLink 2430417 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALLS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2431418 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALLS - Carrying Amount of the Liability Component (Details) link:presentationLink link:calculationLink link:definitionLink 2432419 - Disclosure - CONVERTIBLE SENIOR NOTES AND CAPPED CALLS - Interest Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2133108 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 2334306 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 2435420 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2436421 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Stock-Based Compensation Expense By Statement Of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 2437422 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2438423 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Restricted Stock Unit and Performance Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2139109 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2440424 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 2141110 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 2342307 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2443425 - Disclosure - NET LOSS PER SHARE - Basic and Diluted Net Income (Loss) Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2444426 - Disclosure - NET LOSS PER SHARE - Schedule of Antidilutive Awards (Details) link:presentationLink link:calculationLink link:definitionLink 2145111 - Disclosure - GEOGRAPHICAL INFORMATION link:presentationLink link:calculationLink link:definitionLink 2346308 - Disclosure - GEOGRAPHICAL INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2447427 - Disclosure - GEOGRAPHICAL INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 2148112 - Disclosure - ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 2449428 - Disclosure - ACQUISITIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink