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Document - Document And Entity Information link:presentationLink link:calculationLink link:definitionLink 00150 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Overview of Business link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Significant Agreements link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Warrants to Purchase Common Stock link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Stockholders' Equity and Preferred Stock link:presentationLink link:calculationLink link:definitionLink 10801 - 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Disclosure - Stockholders' Equity and Preferred Stock) (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Share-Based Compensation (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40802 - Disclosure - Share-Based Compensation (Schedule of Share-Based Compensation Expense) (Details) link:presentationLink link:calculationLink link:definitionLink 40803 - Disclosure - Share-Based Compensation (Schedule of Share-Based Compensation, Stock Options, Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 40804 - Disclosure - Share-Based Compensation (Schedule of Share-Based Compensation, Restricted Stock Units and Restricted Stock Awards Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Net Income (Loss) Per Share (Schedule of Calculation of Numerator and Denominator in Earnings Per Share) (Details) link:presentationLink link:calculationLink link:definitionLink 41001 - Disclosure - Litigation (Details) link:presentationLink link:calculationLink link:definitionLink