0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Balance Sheets (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Changes in Stockholders’ Equity link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - GENERAL INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - REVENUE, NET AND CERTAIN STATEMENT OF OPERATIONS COMPONENTS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - STOCK INCENTIVE PLANS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - EQUITY link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - GENERAL INFORMATION (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - REVENUE, NET AND CERTAIN STATEMENT OF OPERATIONS COMPONENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - STOCK INCENTIVE PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - GENERAL INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - REVENUE, NET AND CERTAIN STATEMENT OF OPERATIONS COMPONENTS - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - REVENUE, NET AND CERTAIN STATEMENT OF OPERATIONS COMPONENTS - Schedule of Revenue by Geographic Area (Details) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - REVENUE, NET AND CERTAIN STATEMENT OF OPERATIONS COMPONENTS - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS - Schedule of Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS - Schedule of Capitalized Software, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - CERTAIN BALANCE SHEET COMPONENTS - Schedule of Accrued Expenses and Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - STOCK INCENTIVE PLANS - 2009 and 2019 Stock Plans (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - STOCK INCENTIVE PLANS - 2021 Incentive Plan and Stock Purchase and Matching Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - STOCK INCENTIVE PLANS - RSU Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - STOCK INCENTIVE PLANS - RSU Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - STOCK INCENTIVE PLANS - Stock Option Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - STOCK INCENTIVE PLANS - Stock Option Roll-forward (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - STOCK INCENTIVE PLANS - Stock-based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - STOCK INCENTIVE PLANS - Stock-Based Compensation Income Statement Location (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - NET LOSS PER SHARE - Computation of Net Loss per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - NET LOSS PER SHARE - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - NET LOSS PER SHARE - Anti-dilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - SEGMENT REPORTING (Details) link:presentationLink link:calculationLink link:definitionLink