101 - Document - Document and Entity Information link:calculationLink link:presentationLink link:definitionLink 103 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:calculationLink link:presentationLink link:definitionLink 104 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 105 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (unaudited) link:calculationLink link:presentationLink link:definitionLink 106 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) link:calculationLink link:presentationLink link:definitionLink 107 - Disclosure - ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES link:calculationLink link:presentationLink link:definitionLink 108 - Disclosure - INVESTMENTS link:calculationLink link:presentationLink link:definitionLink 109 - Disclosure - FAIR VALUE MEASUREMENTS link:calculationLink link:presentationLink link:definitionLink 110 - Disclosure - SHARE-BASED COMPENSATION link:calculationLink link:presentationLink link:definitionLink 111 - Disclosure - STOCKHOLDERS' EQUITY link:calculationLink link:presentationLink link:definitionLink 112 - Disclosure - REAL ESTATE link:calculationLink link:presentationLink link:definitionLink 113 - Disclosure - LOSS PER COMMON SHARE link:calculationLink link:presentationLink link:definitionLink 114 - Disclosure - RESEARCH AND DEVELOPMENT link:calculationLink link:presentationLink link:definitionLink 115 - Disclosure - ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies) link:calculationLink link:presentationLink link:definitionLink 116 - Disclosure - INVESTMENTS (Tables) link:calculationLink link:presentationLink link:definitionLink 117 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:calculationLink link:presentationLink link:definitionLink 118 - Disclosure - SHARE-BASED COMPENSATION (Tables) link:calculationLink link:presentationLink link:definitionLink 119 - Disclosure - REAL ESTATE (Tables) link:calculationLink link:presentationLink link:definitionLink 120 - Disclosure - Investments (Detail) link:calculationLink link:presentationLink link:definitionLink 121 - Disclosure - Summary of Investments Classified as Available-For-Sale Securities (Detail) link:calculationLink link:presentationLink link:definitionLink 122 - Disclosure - Available-For-Sale Investments in Unrealized Loss Position (Detail) link:calculationLink link:presentationLink link:definitionLink 123 - Disclosure - Assets Measured at Fair Value on Recurring Basis (Detail) link:calculationLink link:presentationLink link:definitionLink 124 - Disclosure - Compensation Expense Related to Share-Based Compensation (Detail) link:calculationLink link:presentationLink link:definitionLink 125 - Disclosure - Share-Based Compensation - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 126 - Disclosure - Weighted-Average Assumptions for Stock Option Grants using Black-Scholes Option-Pricing Model (Detail) link:calculationLink link:presentationLink link:definitionLink 127 - Disclosure - Stockholders' Equity - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 128 - Disclosure - Real Estate - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 129 - Disclosure - Changes to Accrued Cease-Use Liability (Detail) link:calculationLink link:presentationLink link:definitionLink 130 - Disclosure - Loss Per Common Share - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink