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 OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 0000006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000007 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 0000008 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - RESTRUCTURING link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - BALANCE SHEETS COMPONENTS link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - COMMON STOCK WARRANT LIABILITY link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - STOCK-BASED AWARDS link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - EMPLOYEE BENEFIT PLAN link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9954471 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9954472 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954473 - Disclosure - RESTRUCTURING (Tables) link:presentationLink link:calculationLink link:definitionLink 9954474 - Disclosure - BALANCE SHEETS COMPONENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954475 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954476 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9954477 - Disclosure - COMMON STOCK WARRANT LIABILITY (Tables) link:presentationLink link:calculationLink link:definitionLink 9954478 - Disclosure - STOCKHOLDERS’ EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 9954479 - Disclosure - STOCK-BASED AWARDS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954480 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954481 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954482 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9954483 - Disclosure - DESCRIPTION OF BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 9954484 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 9954485 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - RESTRUCTURING - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954487 - Disclosure - RESTRUCTURING - Schedule of Restructuring Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954488 - Disclosure - BALANCE SHEETS COMPONENTS - Schedule of Inventory (Details) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - BALANCE SHEETS COMPONENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954490 - Disclosure - BALANCE SHEETS COMPONENTS - Schedule of Property, Plant and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - BALANCE SHEETS COMPONENTS - Schedule of Construction in Progress (Details) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - BALANCE SHEETS COMPONENTS - Schedule of Other Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - BALANCE SHEETS COMPONENTS - Schedule of Other Long-Term Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - BALANCE SHEETS COMPONENTS - Schedule of Accrued Warranty Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Schedule of Fair Value Measurements on a Recurring Basis by Level within the Fair Value Hierarchy (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Schedule of Fair Value Measurements on a Recurring Basis by Level within the Fair Value Hierarchy (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Schedule of Available-for-Sale Securities by Contractual Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Schedule of Common Stock Warrant Liability Measured and Recorded at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - DEBT - Schedule of Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - DEBT - Schedule of Components of Interest Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - COMMON STOCK WARRANT LIABILITY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - COMMON STOCK WARRANT LIABILITY - Schedule of Fair Value of Private Warrants (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - COMMON STOCK WARRANT LIABILITY - Schedule of Level 3 Fair Value Inputs (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - Disclosure - STOCKHOLDERS’ EQUITY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954506 - Disclosure - STOCKHOLDERS’ EQUITY - Schedule of Common Stock Reserved for Future Issuance (Details) link:presentationLink link:calculationLink link:definitionLink 9954507 - Disclosure - STOCK-BASED AWARDS - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9954508 - Disclosure - STOCK-BASED AWARDS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954509 - Disclosure - STOCK-BASED AWARDS - Schedule of Restricted Stock Units Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9954510 - Disclosure - STOCK-BASED AWARDS - Schedule of Fair Value of Performance-Based RSUs (Details) link:presentationLink link:calculationLink link:definitionLink 9954511 - Disclosure - STOCK-BASED AWARDS - Employee Stock Purchase Plan (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9954512 - Disclosure - STOCK-BASED AWARDS - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954513 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954514 - Disclosure - LEASES - Schedule of Supplemental Balance Sheet Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954515 - Disclosure - LEASES - Schedule of Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954516 - Disclosure - LEASES - Schedule of Other Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9954517 - Disclosure - LEASES - Schedule of Operating and Finance Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9954517 - Disclosure - LEASES - Schedule of Operating and Finance Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9954518 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954519 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Estimated Future Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9954520 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9954521 - Disclosure - NET LOSS PER SHARE - Schedule of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details) link:presentationLink link:calculationLink link:definitionLink 9954522 - Disclosure - NET LOSS PER SHARE - Schedule of Antidilutive Securities Excluded from Computation of Diluted Net Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9954523 - Disclosure - NET LOSS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954524 - Disclosure - EMPLOYEE BENEFIT PLAN (Details) link:presentationLink link:calculationLink link:definitionLink 9954525 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9954526 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink