1001 - Document - Cover link:presentationLink link:definitionLink link:calculationLink 1002 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 1003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1004 - Statement - Condensed Consolidated Statements of Operations link:presentationLink link:definitionLink link:calculationLink 1005 - Statement - Condensed Consolidated Statements of Changes in Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) link:presentationLink link:definitionLink link:calculationLink 1006 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 1007 - Disclosure - Nature of Business, Basis of Presentation and Liquidity link:presentationLink link:definitionLink link:calculationLink 1008 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 1009 - Disclosure - Property and Equipment link:presentationLink link:definitionLink link:calculationLink 1010 - Disclosure - Accrued Expenses link:presentationLink link:definitionLink link:calculationLink 1011 - Disclosure - Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 1012 - Disclosure - Warrants link:presentationLink link:definitionLink link:calculationLink 1013 - Disclosure - Stock-Based Compensation link:presentationLink link:definitionLink link:calculationLink 1014 - Disclosure - Line of Credit link:presentationLink link:definitionLink link:calculationLink 1015 - Disclosure - Loss Per Share link:presentationLink link:definitionLink link:calculationLink 1016 - Disclosure - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 1017 - Disclosure - Galectin Sciences LLC link:presentationLink link:definitionLink link:calculationLink 1018 - Disclosure - Income Taxes link:presentationLink link:definitionLink link:calculationLink 1019 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:definitionLink link:calculationLink 1020 - Disclosure - Property and Equipment (Tables) link:presentationLink link:definitionLink link:calculationLink 1021 - Disclosure - Accrued Expenses (Tables) link:presentationLink link:definitionLink link:calculationLink 1022 - Disclosure - Stockholders' Equity (Tables) link:presentationLink link:definitionLink link:calculationLink 1023 - Disclosure - Warrants (Tables) link:presentationLink link:definitionLink link:calculationLink 1024 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:definitionLink link:calculationLink 1025 - Disclosure - Loss Per Share (Tables) link:presentationLink link:definitionLink link:calculationLink 1026 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:definitionLink link:calculationLink 1027 - Disclosure - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 1028 - Disclosure - Nature of Business, Basis of Presentation and Liquidity - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1029 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1030 - Disclosure - Property and Equipment (Detail) link:presentationLink link:definitionLink link:calculationLink 1031 - Disclosure - Property and Equipment - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1032 - Disclosure - Accrued Expenses (Detail) link:presentationLink link:definitionLink link:calculationLink 1033 - Disclosure - Stockholders' Equity - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1034 - Disclosure - Return on Investment (Detail) link:presentationLink link:definitionLink link:calculationLink 1035 - Disclosure - Summary of Warrant Activity (Detail) link:presentationLink link:definitionLink link:calculationLink 1036 - Disclosure - Summary of Information with Regard to Outstanding Warrants Issued in Connection with Equity and Debt Financing and Consultants (Detail) link:presentationLink link:definitionLink link:calculationLink 1037 - Disclosure - Summary of Information with Regard to Outstanding Warrants Issued in Connection with Equity and Debt Financing and Consultants (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 1038 - Disclosure - Stock-Based Compensation - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1039 - Disclosure - Stock-Based Compensation Expense Related to Common Stock Options, Restricted Common Stock and Common Stock Warrants (Detail) link:presentationLink link:definitionLink link:calculationLink 1040 - Disclosure - Weighted Average Assumptions Used to Determine Fair Value of Options Granted (Detail) link:presentationLink link:definitionLink link:calculationLink 1041 - Disclosure - Summary of Stock Option Activity (Detail) link:presentationLink link:definitionLink link:calculationLink 1042 - Disclosure - Summary of Additional Information Regarding Outstanding and Exercisable Options under Stock Based Compensation Plans (Detail) link:presentationLink link:definitionLink link:calculationLink 1043 - Disclosure - Line of Credit - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1044 - Disclosure - Computation of Diluted Net Loss Per Share (Detail) link:presentationLink link:definitionLink link:calculationLink 1045 - Disclosure - Dilutive Shares Which Could Exist Pursuant to Exercise of Outstanding Stock Instruments and Which were not Included in Calculation (Detail) link:presentationLink link:definitionLink link:calculationLink 1046 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1047 - Disclosure - Commitments and Contingencies - Maturity of operating lease (Details) link:presentationLink link:definitionLink link:calculationLink 1048 - Disclosure - Galectin Science LLC - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1049 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 1050 - Disclosure - Components of Net Deferred Tax Assets (Detail) link:presentationLink link:definitionLink link:calculationLink 1051 - Disclosure - Primary Factors Affecting Income Tax Rates (Detail) link:presentationLink link:definitionLink link:calculationLink