0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Statements of Operations (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - BUSINESS COMBINATIONS link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - FAIR VALUE MEASUREMENT link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - PROPERTY AND EQUIPMENT, NET link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - INTANGIBLE ASSETS, NET link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - EQUITY SECURITIES link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - BORROWINGS link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - INDEMNIFICATIONS AND GUARANTEES link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - STOCK-BASED AWARDS link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - REVENUE AND CONTRACT LIABILITY link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - BUSINESS SEGMENTS link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - BUSINESS COMBINATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - FAIR VALUE MEASUREMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - INTANGIBLE ASSETS, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - EQUITY SECURITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - STOCK-BASED AWARDS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - REVENUE AND CONTRACT LIABILITY (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - BUSINESS SEGMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - BUSINESS COMBINATIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - BUSINESS COMBINATIONS - Summary of Purchase Consideration (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - BUSINESS COMBINATIONS - Summary of Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - BUSINESS COMBINATIONS - Proforma Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Assets and Liabilities Measured at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Level 3 Investment Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Level 3 Liability Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - PROPERTY AND EQUIPMENT, NET - Schedule of Property, Plant, and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - PROPERTY AND EQUIPMENT, NET - Schedule of Capitalized Computer Software (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - PROPERTY AND EQUIPMENT, NET - Schedule of Depreciation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - PROPERTY AND EQUIPMENT, NET - Schedule of Depreciation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - INTANGIBLE ASSETS, NET (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - EQUITY SECURITIES - Summary of Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - EQUITY SECURITIES - Schedule of Equity Securities Ownership Interest (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - EQUITY SECURITIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - EQUITY SECURITIES - Schedule of Equity Method Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - BORROWINGS (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - LEASES - Schedule of Components of Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - LEASES - Schedule of Other Lease Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - LEASES - Schedule of Additional Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - LEASES - Schedule of Operating Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - LEASES - Schedule of Operating Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - STOCKHOLDERS' EQUITY - Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - STOCKHOLDERS' EQUITY - JonesTrading (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - STOCKHOLDERS' EQUITY - Warrants (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - STOCK-BASED AWARDS - Summary of Stock Based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - STOCK-BASED AWARDS - Summary of Stock Based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - STOCK-BASED AWARDS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - STOCK-BASED AWARDS - Schedule of Restricted Stock and Restricted Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - STOCK-BASED AWARDS - Summary of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - REVENUE AND CONTRACT LIABILITY - Schedule of Deferred Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - REVENUE AND CONTRACT LIABILITY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - REVENUE AND CONTRACT LIABILITY - Schedule of Sales Returns, Reserve For Sales Returns (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - NET LOSS PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - NET LOSS PER SHARE - Schedule of Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - BUSINESS SEGMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - BUSINESS SEGMENTS - Summary of Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink