99900 - Disclosure - Standard And Custom Axis Domain Defaults link:presentationLink link:calculationLink link:definitionLink 995200100 - Statement - CONDENSED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 995200200 - Statement - CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 995200400 - Statement - CONDENSED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 99940701 - Disclosure - PROPERTY AND EQUIPMENT (Details) link:presentationLink link:calculationLink link:definitionLink 99940801 - Disclosure - ACCRUED OTHER EXPENSES (Details) link:presentationLink link:calculationLink link:definitionLink 99941002 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE - Assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 995200105 - Statement - CONDENSED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 995200300 - Statement - CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 99940101 - Disclosure - DESCRIPTION OF BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 99940202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 99940203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Financial Assets Transfers and Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 99940301 - Disclosure - PREFERRED STOCK AND COMMON STOCK - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 99940401 - Disclosure - STOCK-BASED COMPENSATION AWARDS - Equity Incentive Plans (Details) link:presentationLink link:calculationLink link:definitionLink 99940402 - Disclosure - STOCK-BASED COMPENSATION AWARDS - Inducement Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 99940403 - Disclosure - STOCK-BASED COMPENSATION AWARDS - Founder Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 99940404 - Disclosure - STOCK-BASED COMPENSATION AWARDS - Employee Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 99940405 - Disclosure - STOCK-BASED COMPENSATION AWARDS - Stock based compensation expense (Details) link:presentationLink link:calculationLink link:definitionLink 40405 - Disclosure - STOCK-BASED COMPENSATION AWARDS - Stock based compensation expense Default (Details) link:presentationLink link:calculationLink link:definitionLink 99940602 - Disclosure - NET LOSS PER SHARE - Potentially dilutive securities (Details) link:presentationLink link:calculationLink link:definitionLink 99940901 - Disclosure - SEGMENT REPORTING (Details) link:presentationLink link:calculationLink link:definitionLink 99941001 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 995200090 - Document - DOCUMENT AND ENTITY INFORMATION link:presentationLink link:calculationLink link:definitionLink 995210101 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 995210201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 995210301 - Disclosure - PREFERRED STOCK AND COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 995210401 - Disclosure - STOCK-BASED COMPENSATION AWARDS link:presentationLink link:calculationLink link:definitionLink 995210501 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 995210601 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 995210701 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 995210801 - Disclosure - ACCRUED OTHER EXPENSES link:presentationLink link:calculationLink link:definitionLink 995210901 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 995211001 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE link:presentationLink link:calculationLink link:definitionLink 99920202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 99930203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 99930403 - Disclosure - STOCK-BASED COMPENSATION AWARDS (Tables) link:presentationLink link:calculationLink link:definitionLink 99930603 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 99930703 - Disclosure - PROPERTY AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 99930803 - Disclosure - ACCRUED OTHER EXPENSES (Tables) link:presentationLink link:calculationLink link:definitionLink 99930903 - Disclosure - SEGMENT REPORTING (Tables) link:presentationLink link:calculationLink link:definitionLink 99931003 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE (Tables) link:presentationLink link:calculationLink link:definitionLink 99940601 - Disclosure - NET LOSS PER SHARE - Computation of Net loss per share (Details) link:presentationLink link:calculationLink link:definitionLink