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 (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash Reconciliation (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - BALANCE SHEET INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - RESTRUCTURING CHARGES link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - BALANCE SHEET INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - RESTRUCTURING CHARGES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - COMMON STOCK (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - REVENUE - Schedule of Certain Information Related to Contract Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - REVENUE - Schedule of Remaining Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - REVENUE - Schedule of Deferred Revenue, by Arrangement, Disclosure (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - BALANCE SHEET INFORMATION - Schedule of Manufacturing Inventories (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - BALANCE SHEET INFORMATION - Schedule of Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - BALANCE SHEET INFORMATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - BALANCE SHEET INFORMATION - Schedule of Intangible Assets, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - BALANCE SHEET INFORMATION - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - BALANCE SHEET INFORMATION - Schedule of Other Long Term Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - BALANCE SHEET INFORMATION - Schedule of Other Accrued Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - BALANCE SHEET INFORMATION - Schedule of Change in Accrued Warranty Balance (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - DEBT - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - LEASES - Supplemental Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - LEASES - Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - LEASES - Schedule of Lessee Operating Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - LEASES - Schedule of Lessee Operating Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - LEASES - Lease Term and Discount Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - RESTRUCTURING CHARGES - Schedule of Restructuring Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - COMMON STOCK - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - COMMON STOCK - Schedule of Reserved Shares for Future Issuance under ESPP (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - COMMON STOCK - Schedule of Performance Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - COMMON STOCK - Schedule of Restricted Stock Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - COMMON STOCK - Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - COMMON STOCK - Estimate Fair Value Of Option Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - COMMON STOCK - Schedule of Share-based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - COMMON STOCK - Level 2 Warrants Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - COMMON STOCK - Fair Value Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - NET LOSS PER SHARE - Anti-dilutive shares excluded from the computations of diluted net income (loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - NET LOSS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - INCOME TAXES - Schedule of Pre-tax Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - INCOME TAXES - Schedule of Components of Income Tax Provision (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - INCOME TAXES - Schedule of income taxes paid, net of refunds received (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - INCOME TAXES - Schedule of Income Tax Rate Reconciliation Amount (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Summarizes the Key Assumptions in Estimating the Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Valuations for the Warrant Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Estimate Fair Value Of Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Changes In Fair Value Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - SEGMENT INFORMATION - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - SEGMENT INFORMATION - Segment Net Income (Loss) Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - SEGMENT INFORMATION - Property and Equipment, Net by Geographic Region (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink