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Disclosure - OTHER BALANCE SHEET COMPONENTS - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 99941002 - Disclosure - OTHER BALANCE SHEET COMPONENTS - Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 99941003 - Disclosure - OTHER BALANCE SHEET COMPONENTS - Estimated Future Amortization Expense Of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 99941004 - Disclosure - OTHER BALANCE SHEET COMPONENTS - Other Accrued Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 99941101 - Disclosure - DEBT (Summary of Loans Payable) (Details) link:presentationLink link:calculationLink link:definitionLink 99941103 - Disclosure - DEBT - Future Minimum Payments (Details) link:presentationLink link:calculationLink link:definitionLink 99941202 - Disclosure - COMMITMENTS AND CONTINGENCIES - Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 99941204 - Disclosure - COMMITMENTS AND CONTINGENCIES - Sublease Information (Details) link:presentationLink link:calculationLink link:definitionLink 99941401 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 99941501 - Disclosure - SEGMENT INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 995200090 - Document - DOCUMENT AND ENTITY INFORMATION link:presentationLink link:calculationLink link:definitionLink 995200105 - Statement - BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 995200400 - Statement - STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) link:presentationLink link:calculationLink link:definitionLink 995210101 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 995210201 - Disclosure - NET INCOME (LOSS) PER SHARE link:presentationLink link:calculationLink link:definitionLink 995210301 - Disclosure - REVENUES link:presentationLink link:calculationLink link:definitionLink 995210401 - Disclosure - SPONSORED RESEARCH AND LICENSE AGREEMENTS AND GOVERNMENT CONTRACTS link:presentationLink link:calculationLink link:definitionLink 995210601 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 995210701 - Disclosure - INVENTORIES link:presentationLink link:calculationLink link:definitionLink 995210801 - Disclosure - CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 995210901 - Disclosure - FAIR VALUE link:presentationLink link:calculationLink link:definitionLink 995211001 - Disclosure - OTHER BALANCE SHEET COMPONENTS link:presentationLink link:calculationLink link:definitionLink 995211101 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 995211201 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 995211301 - Disclosure - STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 995211401 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 995211601 - Disclosure - RESTRUCTURING CHARGES link:presentationLink link:calculationLink link:definitionLink 99920102 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 99930103 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 99930203 - Disclosure - NET INCOME (LOSS) PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 99930303 - Disclosure - REVENUES (Tables) link:presentationLink link:calculationLink link:definitionLink 99930603 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 99930703 - Disclosure - INVENTORIES (Tables) link:presentationLink link:calculationLink link:definitionLink 99930803 - Disclosure - CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 99930903 - Disclosure - FAIR VALUE (Tables) link:presentationLink link:calculationLink link:definitionLink 99931003 - Disclosure - OTHER BALANCE SHEET COMPONENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 99931103 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 99931203 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 99931403 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 99940101 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basis of Presentation and Liquidity (Details) link:presentationLink link:calculationLink link:definitionLink 99940102 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock-based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 99940103 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounts Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 99940104 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 99940105 - Disclosure - DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advertising Expense (Details) link:presentationLink link:calculationLink link:definitionLink 99940201 - Disclosure - NET INCOME (LOSS) PER SHARE - Computation (Details) link:presentationLink link:calculationLink link:definitionLink 99940202 - Disclosure - NET INCOME (LOSS) PER SHARE - Shares Excluded from Computation (Details) link:presentationLink link:calculationLink link:definitionLink 99940301 - 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Disclosure - STOCK-BASED COMPENSATION - Plans (Details) link:presentationLink link:calculationLink link:definitionLink 99940605 - Disclosure - STOCK-BASED COMPENSATION - Stock Options by Exercise Price (Details) link:presentationLink link:calculationLink link:definitionLink 99940606 - Disclosure - STOCK-BASED COMPENSATION - Employee Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 99940901 - Disclosure - FAIR VALUE (Details) link:presentationLink link:calculationLink link:definitionLink 99941102 - Disclosure - DEBT (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 99941201 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 99941203 - Disclosure - COMMITMENTS AND CONTINGENCIES - Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 99941205 - Disclosure - COMMITMENTS AND CONTINGENCIES - Purchase Commitments and Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 99941301 - Disclosure - STOCKHOLDERS' EQUITY - Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 99941302 - Disclosure - STOCKHOLDERS' EQUITY - Common Stock and Sale Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 99941402 - Disclosure - INCOME TAXES - Valuation Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 99941403 - Disclosure - INCOME TAXES - Operating Loss Carryforwards (Details) link:presentationLink link:calculationLink link:definitionLink 99941404 - Disclosure - INCOME TAXES - Tax Credits (Details) link:presentationLink link:calculationLink link:definitionLink 99941405 - Disclosure - INCOME TAXES - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 99941601 - Disclosure - RESTRUCTURING CHARGES (Details) link:presentationLink link:calculationLink link:definitionLink 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure link:presentationLink link:calculationLink link:definitionLink 995200205 - Statement - STATEMENTS OF OPERATIONS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 995200405 - Statement - STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 995210501 - Disclosure - IN-LICENSING AND ACQUISITION link:presentationLink link:calculationLink link:definitionLink 995211501 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 99930503 - Disclosure - IN-LICENSING AND ACQUISITION (Tables) link:presentationLink link:calculationLink link:definitionLink 99931503 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink