0000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 0010 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 0015 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0020 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 0021 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Calc 2) link:presentationLink link:calculationLink link:definitionLink 0030 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 0040 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 1010 - Disclosure - NATURE OF BUSINESS AND OVERVIEW link:presentationLink link:calculationLink link:definitionLink 1020 - 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Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 1130 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 1140 - Disclosure - COLLABORATION AGREEMENTS link:presentationLink link:calculationLink link:definitionLink 1150 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 1160 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 1170 - Disclosure - RETIREMENT SAVINGS PLAN link:presentationLink link:calculationLink link:definitionLink 1180 - Disclosure - SELECTED QUARTERLY FINANCIAL DATA (Unaudited) link:presentationLink link:calculationLink link:definitionLink 2020 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 3020 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 3030 - Disclosure - COMPREHENSIVE LOSS (Tables) link:presentationLink link:calculationLink link:definitionLink 3040 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 3050 - Disclosure - MARKETABLE SECURITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 3060 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 3070 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 3080 - Disclosure - ACCRUED EXPENSES (Tables) link:presentationLink link:calculationLink link:definitionLink 3090 - Disclosure - OTHER LONG-TERM LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 3120 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 3150 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 3160 - 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Disclosure - FAIR VALUE MEASUREMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 4050 - Disclosure - MARKETABLE SECURITIES (Details) link:presentationLink link:calculationLink link:definitionLink 4051 - Disclosure - MARKETABLE SECURITIES (Details) (Calc 2) link:presentationLink link:calculationLink link:definitionLink 4060 - Disclosure - PROPERTY AND EQUIPMENT, NET (Details) link:presentationLink link:calculationLink link:definitionLink 4070 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Details) link:presentationLink link:calculationLink link:definitionLink 4071 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Details) (Calc 2) link:presentationLink link:calculationLink link:definitionLink 4080 - Disclosure - ACCRUED EXPENSES (Details) link:presentationLink link:calculationLink link:definitionLink 4090 - Disclosure - OTHER LONG-TERM LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 4091 - Disclosure - OTHER LONG-TERM LIABILITIES (Details 2) link:presentationLink link:calculationLink link:definitionLink 4092 - Disclosure - OTHER LONG-TERM LIABILITIES (Details) (Calc 2) link:presentationLink link:calculationLink link:definitionLink 4100 - Disclosure - TERM LOAN (Details) link:presentationLink link:calculationLink link:definitionLink 4110 - Disclosure - STOCKHOLDERS' EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 4120 - Disclosure - STOCK-BASED COMPENSATION (Details) link:presentationLink link:calculationLink link:definitionLink 4121 - Disclosure - STOCK-BASED COMPENSATION (Details 2) link:presentationLink link:calculationLink link:definitionLink 4130 - Disclosure - REVENUE (Details) link:presentationLink link:calculationLink link:definitionLink 4140 - Disclosure - COLLABORATION AGREEMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 4150 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 4151 - Disclosure - INCOME TAXES (Details 2) link:presentationLink link:calculationLink link:definitionLink 4152 - 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Disclosure - Net Loss Per Share link:presentationLink link:calculationLink link:definitionLink 8060 - Disclosure - Net Loss Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 8070 - Disclosure - Net Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 8080 - Disclosure - OTHER LONG-TERM LIABILITIES (Details 3) link:presentationLink link:calculationLink link:definitionLink