0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Statements of Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - STOCKHOLDERS’ EQUITY (DEFICIT) link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - EMPLOYEE BENEFIT PLANS link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - RESTRUCTURING RELATED CHARGES link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Organization, Consolidation and Presentation of Financial Statements (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - REVENUE - Schedule of Contract Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - REVENUE - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - REVENUE - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - REVENUE - Schedule of Capitalized Contract Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - REVENUE - Schedule of Deferred Costs, Net and Other Assets Disclosure (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - INVESTMENTS - Summary of Available-for-Sale Marketable Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - INVESTMENTS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Schedule of Property, Equipment and Software, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Schedule of Depreciation and Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Schedule of Capitalization of Content Assets and Amortization Expense for Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - CONSOLIDATED BALANCE SHEET COMPONENTS - Schedule of Future Expected Amortization Expense for Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - LEASES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - LEASES - Schedule of Components of Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - LEASES - Schedule of Future Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - LEASES - Schedule of Future Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - LEASES - Schedule of Supplemental Cash Flow and Weighted-average Remaining Lease Term and Discount Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - INCOME TAXES - Schedule of Components of Loss Before Income Tax (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - INCOME TAXES - Schedule of Income Tax Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - INCOME TAXES - Schedule of Reconciliation Between the Statutory U.S. Federal Income Tax Rate and our Effective Tax Rate as a Percentage of Loss Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - INCOME TAXES - Schedule of Significant components of our deferred tax assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - INCOME TAXES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - INCOME TAXES - Summary of income tax contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - INCOME TAXES - Income taxes paid, net of refunds (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - NET LOSS PER SHARE - Calculation of Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - NET LOSS PER SHARE - Schedule of Securities with a Potentially Dilutive Impact (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - COMMITMENTS AND CONTINGENCIES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - STOCKHOLDERS’ EQUITY (DEFICIT) (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - EMPLOYEE BENEFIT PLANS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - EMPLOYEE BENEFIT PLANS - Schedule of Stock Option Activity under the Plans (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - EMPLOYEE BENEFIT PLANS - Schedule of Share-based Compensation, Restricted Stock Units Award Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - EMPLOYEE BENEFIT PLANS - Summary of weighted-average assumptions to record compensation expenses for stock options granted (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - EMPLOYEE BENEFIT PLANS - Summary of Estimated Assumptions Used in Value of ESPP Rights (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - EMPLOYEE BENEFIT PLANS - Summary of Stock-Based Compensation Expense in the Consolidated Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - EMPLOYEE BENEFIT PLANS - Summary of Shares of Common Stock Reserved for Future Issuance (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - EMPLOYEE BENEFIT PLANS - 401(k) Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - RELATED PARTY TRANSACTIONS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Segment Results of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Summary of Revenue By Region Based On Billing Address (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Summary of Long Lived Assets By Geographic Region (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - RESTRUCTURING RELATED CHARGES (Details) link:presentationLink link:calculationLink link:definitionLink