0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000004 - Statement - Condensed Consolidated Statements of Loss link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - Condensed Consolidated Statements of Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 0000006 - Statement - Condensed Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 0000007 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 0000008 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - INTANGIBLE ASSETS AND GOODWILL link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - BORROWINGS link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 9954471 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9954472 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954473 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 9954474 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9954475 - Disclosure - INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954476 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954477 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 9954478 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954479 - Disclosure - BORROWINGS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954480 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9954481 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954482 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounts Receivable Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9954483 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9954484 - Disclosure - REVENUE - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9954485 - Disclosure - REVENUE - Contract Balances on Condensed Consolidated Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954487 - Disclosure - REVENUE - Capitalized Direct Commission Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9954488 - Disclosure - NET LOSS PER SHARE - Schedule of Net Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - NET LOSS PER SHARE - Schedule of Potentially Dilutive Securities Excluded from the Calculation of Diluted Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9954490 - Disclosure - INVESTMENTS - Debt Securities, Available-for-sale (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - INVESTMENTS - Debt Securities, Held-to-maturity, Nonaccrual (Details) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - INVESTMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - FAIR VALUE MEASUREMENTS - Fair Value, Assets Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - LEASES - Operating Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - LEASES - Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - LEASES - Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - BORROWINGS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - BORROWINGS - Schedule of Vendor Financing Arrangements (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - BORROWINGS - Schedule of Vendor Financing Arrangements (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - STOCK-BASED COMPENSATION - Stock-Based Compensation Related to Stock-Based Awards to Employees (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9954506 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink