000010001 - Document - COVER PAGE link:presentationLink link:calculationLink link:definitionLink 100010002 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 100020003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100030004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 100040005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 100050006 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 100060007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 210011001 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION link:presentationLink link:calculationLink link:definitionLink 210021002 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 220032001 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 230043001 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 240054001 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240064002 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Activity in Allowance for Doubtful Accounts (Details) link:presentationLink link:calculationLink link:definitionLink 210071003 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 230083002 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 240094003 - Disclosure - REVENUE RECOGNITION - Summary of Disaggregated Revenue by Primary Geographical Market and Timing of Revenue Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 240104004 - Disclosure - REVENUE RECOGNITION - Summary of Contract Assets and Contract Liabilities from Contracts with Customers (Details) link:presentationLink link:calculationLink link:definitionLink 240114005 - Disclosure - REVENUE RECOGNITION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240124006 - Disclosure - REVENUE RECOGNITION - Summary of Significant Changes in the Balances of Contract Liabilities and Assets (Details) link:presentationLink link:calculationLink link:definitionLink 240134007 - Disclosure - REVENUE RECOGNITION - Summary of Estimated Revenue Expected to be Recognized in Future Periods (Details) link:presentationLink link:calculationLink link:definitionLink 240134007 - Disclosure - REVENUE RECOGNITION - Summary of Estimated Revenue Expected to be Recognized in Future Periods (Details) link:presentationLink link:calculationLink link:definitionLink 210141004 - Disclosure - INVENTORY link:presentationLink link:calculationLink link:definitionLink 230153003 - Disclosure - INVENTORY (Tables) link:presentationLink link:calculationLink link:definitionLink 240164008 - Disclosure - INVENTORY - Summary of Inventory (Details) link:presentationLink link:calculationLink link:definitionLink 210171005 - Disclosure - PROPERTY AND EQUIPMENT, NET link:presentationLink link:calculationLink link:definitionLink 230183004 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 240194009 - Disclosure - PROPERTY AND EQUIPMENT, NET - Summary of Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 240204010 - Disclosure - PROPERTY AND EQUIPMENT, NET - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 210211006 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 230223005 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 240234011 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill and Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 240244012 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 210251007 - Disclosure - ACCRUED LIABILITIES link:presentationLink link:calculationLink link:definitionLink 230263006 - Disclosure - ACCRUED LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 240274013 - Disclosure - ACCRUED LIABILITIES - Schedule of Accrued Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 210281008 - Disclosure - WARRANTY OBLIGATIONS link:presentationLink link:calculationLink link:definitionLink 230293007 - Disclosure - WARRANTY OBLIGATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 240304014 - Disclosure - WARRANTY OBLIGATIONS - Summary of Warranty Activities (Details) link:presentationLink link:calculationLink link:definitionLink 240314015 - Disclosure - WARRANTY OBLIGATIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 210321009 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 230333008 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 240344016 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240354017 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Liabilities Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 240364018 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Changes in Nonfinancial Liabilities Related to Warrant Obligations Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Details) link:presentationLink link:calculationLink link:definitionLink 240374019 - Disclosure - FAIR VALUE MEASUREMENTS - Summary of Significant Unobservable Inputs used in the Fair Value Measurement of Liabilities Designated as Level 3 (Details) link:presentationLink link:calculationLink link:definitionLink 210381010 - Disclosure - RESTRUCTURING link:presentationLink link:calculationLink link:definitionLink 230393009 - Disclosure - RESTRUCTURING (Tables) link:presentationLink link:calculationLink link:definitionLink 240404020 - Disclosure - RESTRUCTURING - Summary of Restructuring Charges (Details) link:presentationLink link:calculationLink link:definitionLink 240414021 - Disclosure - RESTRUCTURING - Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 210421011 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 230433010 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 240444022 - Disclosure - DEBT - Long-term debt (Details) link:presentationLink link:calculationLink link:definitionLink 240444022 - Disclosure - DEBT - Long-term debt (Details) link:presentationLink link:calculationLink link:definitionLink 240454023 - Disclosure - DEBT - Convertible Senior Notes due in 2025 Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240464024 - Disclosure - DEBT - Convertible Note Embedded Derivative (Details) link:presentationLink link:calculationLink link:definitionLink 240474025 - Disclosure - DEBT - Schedule of Convertible Senior Notes due in 2025 (Details) link:presentationLink link:calculationLink link:definitionLink 240484026 - Disclosure - DEBT - Convertible Notes Hedge and Warrant Liability (Details) link:presentationLink link:calculationLink link:definitionLink 240494027 - Disclosure - DEBT - Convertible Senior Notes due 2024 Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240504028 - Disclosure - DEBT - Schedule of Convertible Senior Notes due 2024 (Details) link:presentationLink link:calculationLink link:definitionLink 240514029 - Disclosure - DEBT - Convertible Senior Notes due 2023 Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240524030 - Disclosure - DEBT - Schedule of Convertible Senior Notes due 2023 (Details) link:presentationLink link:calculationLink link:definitionLink 240534031 - Disclosure - DEBT - Sale of Long - Term Financing Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 210541012 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 230553011 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 240564032 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240574033 - Disclosure - COMMITMENTS AND CONTINGENCIES - Lease Expense Components (Details) link:presentationLink link:calculationLink link:definitionLink 240584034 - Disclosure - COMMITMENTS AND CONTINGENCIES - Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 240594035 - Disclosure - COMMITMENTS AND CONTINGENCIES - Supplemental Cash Flow and Other Information (Details) link:presentationLink link:calculationLink link:definitionLink 240604036 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Minimum Lease Payments Under Noncancelable Operating Leases (Details) link:presentationLink link:calculationLink link:definitionLink 240604036 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Minimum Lease Payments Under Noncancelable Operating Leases (Details) link:presentationLink link:calculationLink link:definitionLink 210611013 - Disclosure - SALE OF COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 240624037 - Disclosure - SALE OF COMMON STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 210631014 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 230643012 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 240654038 - Disclosure - STOCK-BASED COMPENSATION Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240664039 - Disclosure - STOCK-BASED COMPENSATION - Summary of Stock-based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 240674040 - Disclosure - STOCK-BASED COMPENSATION - Summary of Stock-Based Compensation Expense Associated with Each Type of Award (Details) link:presentationLink link:calculationLink link:definitionLink 240684041 - Disclosure - STOCK-BASED COMPENSATION - Summary of the Weighted-Average Grant Date Fair Value of Options Granted (Details) link:presentationLink link:calculationLink link:definitionLink 240694042 - Disclosure - STOCK-BASED COMPENSATION - Summary of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 240704043 - Disclosure - STOCK-BASED COMPENSATION - Summary of Stock Options Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 240714044 - Disclosure - STOCK-BASED COMPENSATION - Summary of Restricted Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 240724045 - Disclosure - STOCK-BASED COMPENSATION - Summary of Performance Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 240734046 - Disclosure - STOCK-BASED COMPENSATION - Summary of ESPP Activity (Details) link:presentationLink link:calculationLink link:definitionLink 210741015 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 230753013 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 240764047 - Disclosure - INCOME TAXES - Schedule of Domestic and Foreign Components of Loss before Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 240774048 - Disclosure - INCOME TAXES - Schedule of Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 240784049 - Disclosure - INCOME TAXES - Schedule of Effective Income Tax Rate Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 240794050 - Disclosure - INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 240804051 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240814052 - Disclosure - INCOME TAXES - Schedule of Reconciliation of Total Amounts of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 210821016 - Disclosure - CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS link:presentationLink link:calculationLink link:definitionLink 240834053 - Disclosure - CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS (Details) link:presentationLink link:calculationLink link:definitionLink 210841017 - Disclosure - NET INCOME (LOSS) PER SHARE link:presentationLink link:calculationLink link:definitionLink 230853014 - Disclosure - NET INCOME PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 240864054 - Disclosure - NET INCOME PER SHARE - Schedule of Computation of Basic and Diluted Net Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 240874055 - Disclosure - NET INCOME PER SHARE - Schedule of Potentially Dilutive Securities Excluded from the Computation of Diluted Net Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 240884056 - Disclosure - NET INCOME PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 210891018 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION link:presentationLink link:calculationLink link:definitionLink 230903015 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 240914057 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240924058 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Summary of Long-Lived Assets by Geographic Region (Details) link:presentationLink link:calculationLink link:definitionLink 210931019 - Disclosure - RELATED PARTY link:presentationLink link:calculationLink link:definitionLink 240944059 - Disclosure - RELATED PARTY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 210951020 - Disclosure - ACQUISITION link:presentationLink link:calculationLink link:definitionLink 230963016 - Disclosure - ACQUISITION (Tables) link:presentationLink link:calculationLink link:definitionLink 240974060 - Disclosure - ACQUISITION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 240984061 - Disclosure - ACQUISITION - Summary of Consideration Transferred for Business Acquisition (Details) link:presentationLink link:calculationLink link:definitionLink 240994062 - Disclosure - ACQUISITION - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 241004063 - Disclosure - ACQUISITION - Summary of Identifiable Intangible Assets Acquired (Details) link:presentationLink link:calculationLink link:definitionLink 241014064 - Disclosure - ACQUISITION - Summary of Allocation of Purchase Price to Intangible Assets and Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 211021021 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 241034065 - Disclosure - SUBSEQUENT EVENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 211041022 - Disclosure - SELECTED UNAUDITED QUARTERLY FINANCIAL INFORMATION link:presentationLink link:calculationLink link:definitionLink 231053017 - Disclosure - SELECTED UNAUDITED QUARTERLY FINANCIAL INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 241064066 - Disclosure - SELECTED UNAUDITED QUARTERLY FINANCIAL INFORMATION - Schedule of Quarterly Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink