001 - Statement - Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 002 - Statement - Consolidated Balance Sheets (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 003 - Statement - Consolidated Statements of Operations link:presentationLink link:definitionLink link:calculationLink 004 - Statement - Consolidated Statements of Comprehensive Loss link:presentationLink link:definitionLink link:calculationLink 005 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 006 - Statement - Consolidated Statements of Change in Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 007 - Disclosure - Note 1 - Summary of Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 008 - Disclosure - Note 2 - Financial Condition link:presentationLink link:definitionLink link:calculationLink 009 - Disclosure - Note 3 - Short-term Investments Available for Sale link:presentationLink link:definitionLink link:calculationLink 010 - Disclosure - Note 4 - Fair Value of Financial Instruments link:presentationLink link:definitionLink link:calculationLink 011 - Disclosure - Note 5 - Acquisition of EGEN, Inc. link:presentationLink link:definitionLink link:calculationLink 012 - Disclosure - Note 6 - Property, Plant and Equipment link:presentationLink link:definitionLink link:calculationLink 013 - Disclosure - Note 7 - Other Accrued Liabilities link:presentationLink link:definitionLink link:calculationLink 014 - Disclosure - Note 8 - Notes Payable link:presentationLink link:definitionLink link:calculationLink 015 - Disclosure - Note 9 - Income Taxes link:presentationLink link:definitionLink link:calculationLink 016 - Disclosure - Note 10 - Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 017 - Disclosure - Note 11 - Stock Based Compensation link:presentationLink link:definitionLink link:calculationLink 018 - Disclosure - Note 12 - Earn Out Milestone Liability link:presentationLink link:definitionLink link:calculationLink 019 - Disclosure - Note 13 - Warrants link:presentationLink link:definitionLink link:calculationLink 020 - Disclosure - Note 14 - Celsion Employee Benefit Plans link:presentationLink link:definitionLink link:calculationLink 021 - Disclosure - Note 15 - Licenses of Intellectual Property and Patents link:presentationLink link:definitionLink link:calculationLink 022 - Disclosure - Note 16 - Technology Development and Licensing Agreements link:presentationLink link:definitionLink link:calculationLink 023 - Disclosure - Note 17 - Contingent Liabilities and Commitments link:presentationLink link:definitionLink link:calculationLink 024 - Disclosure - Note 18 - Subsequent Events link:presentationLink link:definitionLink link:calculationLink 025 - Disclosure - Note 19 - Selected Quarterly Financial Data (Unaudited) link:presentationLink link:definitionLink link:calculationLink 026 - Disclosure - Accounting Policies, by Policy (Policies) link:presentationLink link:definitionLink link:calculationLink 027 - Disclosure - Note 3 - Short-term Investments Available for Sale (Tables) link:presentationLink link:definitionLink link:calculationLink 028 - Disclosure - Note 4 - Fair Value of Financial Instruments (Tables) link:presentationLink link:definitionLink link:calculationLink 029 - Disclosure - Note 5 - Acquisition of EGEN, Inc. (Tables) link:presentationLink link:definitionLink link:calculationLink 030 - Disclosure - Note 6 - Property, Plant and Equipment (Tables) link:presentationLink link:definitionLink link:calculationLink 031 - Disclosure - Note 7 - Other Accrued Liabilities (Tables) link:presentationLink link:definitionLink link:calculationLink 032 - Disclosure - Note 8 - Notes Payable (Tables) link:presentationLink link:definitionLink link:calculationLink 033 - Disclosure - Note 9 - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 034 - Disclosure - Note 10 - Stockholders' Equity (Tables) link:presentationLink link:definitionLink link:calculationLink 035 - Disclosure - Note 11 - Stock Based Compensation (Tables) link:presentationLink link:definitionLink link:calculationLink 036 - Disclosure - Note 12 - Earn Out Milestone Liability (Tables) link:presentationLink link:definitionLink link:calculationLink 037 - Disclosure - Note 13 - Warrants (Tables) link:presentationLink link:definitionLink link:calculationLink 038 - Disclosure - Note 17 - Contingent Liabilities and Commitments (Tables) link:presentationLink link:definitionLink link:calculationLink 039 - Disclosure - Note 19 - Selected Quarterly Financial Data (Unaudited) (Tables) link:presentationLink link:definitionLink link:calculationLink 040 - Disclosure - Note 1 - Summary of Significant Accounting Policies (Details) link:presentationLink link:definitionLink link:calculationLink 041 - Disclosure - Note 2 - Financial Condition (Details) link:presentationLink link:definitionLink link:calculationLink 042 - Disclosure - Note 3 - Short-term Investments Available for Sale (Details) link:presentationLink link:definitionLink link:calculationLink 043 - Disclosure - Note 3 - Short-term Investments Available for Sale (Details) - Short-Term Investment by Bond Maturities link:presentationLink link:definitionLink link:calculationLink 044 - Disclosure - Note 3 - Short-term Investments Available for Sale (Details) - Investment Income link:presentationLink link:definitionLink link:calculationLink 045 - Disclosure - Note 3 - Short-term Investments Available for Sale (Details) - Investment Securities Gross Unrealized Losses and Fair Value by Investment Category link:presentationLink link:definitionLink link:calculationLink 046 - Disclosure - Note 4 - Fair Value of Financial Instruments (Details) link:presentationLink link:definitionLink link:calculationLink 047 - Disclosure - Note 4 - Fair Value of Financial Instruments (Details) - Assets and Liabilities at Fair Value on a Recurring Basis link:presentationLink link:definitionLink link:calculationLink 048 - Disclosure - Note 5 - Acquisition of EGEN, Inc. (Details) link:presentationLink link:definitionLink link:calculationLink 049 - Disclosure - Note 5 - Acquisition of EGEN, Inc. (Details) - Fair Value of Consideration link:presentationLink link:definitionLink link:calculationLink 050 - Disclosure - Note 5 - Acquisition of EGEN, Inc. (Details) - Fair Value of Consideration (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 051 - Disclosure - Note 5 - Acquisition of EGEN, Inc. (Details) - Summary of Estimated Fair Values of Acquired Assets and Liabilities link:presentationLink link:definitionLink link:calculationLink 052 - Disclosure - Note 5 - Acquisition of EGEN, Inc. (Details) - Pro Forma Information link:presentationLink link:definitionLink link:calculationLink 053 - Disclosure - Note 6 - Property, Plant and Equipment (Details) - Property, Plant, and Equipment Useful Life link:presentationLink link:definitionLink link:calculationLink 054 - Disclosure - Note 6 - Property, Plant and Equipment (Details) - Property, Plant, and Equipment Useful Life (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 055 - Disclosure - Note 7 - Other Accrued Liabilities (Details) - Accrued Liabilities link:presentationLink link:definitionLink link:calculationLink 056 - Disclosure - Note 8 - Notes Payable (Details) link:presentationLink link:definitionLink link:calculationLink 057 - Disclosure - Note 8 - Notes Payable (Details) - Future Principal Payments Due on the Credit Agreement link:presentationLink link:definitionLink link:calculationLink 058 - Disclosure - Note 9 - Income Taxes (Details) link:presentationLink link:definitionLink link:calculationLink 059 - Disclosure - Note 9 - Income Taxes (Details) - Reconciliation of the Company's Statutory Tax Rate to the Effective Rate link:presentationLink link:definitionLink link:calculationLink 060 - Disclosure - Note 9 - Income Taxes (Details) - Components of the Company's Deferred Tax Asset link:presentationLink link:definitionLink link:calculationLink 061 - Disclosure - Note 9 - Income Taxes (Details) - Approximate Amount Of Unused Operating Loss Carry Forwards and Expiration Dates link:presentationLink link:definitionLink link:calculationLink 062 - Disclosure - Note 10 - Stockholders' Equity (Details) link:presentationLink link:definitionLink link:calculationLink 063 - Disclosure - Note 10 - Stockholders' Equity (Details) - Assumptions Used in the Valuation of the Warrants Associated with Preferred Stock Offering link:presentationLink link:definitionLink link:calculationLink 064 - Disclosure - Note 10 - Stockholders' Equity (Details) - Waived Warrants link:presentationLink link:definitionLink link:calculationLink 065 - Disclosure - Note 10 - Stockholders' Equity (Details) - Assumptions for Valuation of Waived Warrants Associated with Common Stock Offering link:presentationLink link:definitionLink link:calculationLink 066 - Disclosure - Note 11 - Stock Based Compensation (Details) link:presentationLink link:definitionLink link:calculationLink 067 - Disclosure - Note 11 - Stock Based Compensation (Details) - Stock Option and Restricted Stock Awards link:presentationLink link:definitionLink link:calculationLink 068 - Disclosure - Note 11 - Stock Based Compensation (Details) - Summary of the Status of the Company's Non-Vested Restricted Stock Awards link:presentationLink link:definitionLink link:calculationLink 069 - Disclosure - Note 11 - Stock Based Compensation (Details) - Summary of Stock Option Awards And Changes link:presentationLink link:definitionLink link:calculationLink 070 - Disclosure - Note 11 - Stock Based Compensation (Details) - Fair Value of Option Assumptions link:presentationLink link:definitionLink link:calculationLink 071 - Disclosure - Note 12 - Earn Out Milestone Liability (Details) link:presentationLink link:definitionLink link:calculationLink 072 - Disclosure - Note 12 - Earn Out Milestone Liability (Details) - Summary of the Changes in the Earn-Out Milestone Liability link:presentationLink link:definitionLink link:calculationLink 073 - Disclosure - Note 13 - Warrants (Details) link:presentationLink link:definitionLink link:calculationLink 074 - Disclosure - Note 13 - Warrants (Details) - Summary of Warrant Activity link:presentationLink link:definitionLink link:calculationLink 075 - Disclosure - Note 13 - Warrants (Details) - Fair Value of Warrants Assumptions link:presentationLink link:definitionLink link:calculationLink 076 - Disclosure - Note 13 - Warrants (Details) - Common Stock Warrant Liability link:presentationLink link:definitionLink link:calculationLink 077 - Disclosure - Note 14 - Celsion Employee Benefit Plans (Details) link:presentationLink link:definitionLink link:calculationLink 078 - Disclosure - Note 15 - Licenses of Intellectual Property and Patents (Details) link:presentationLink link:definitionLink link:calculationLink 079 - Disclosure - Note 16 - Technology Development and Licensing Agreements (Details) link:presentationLink link:definitionLink link:calculationLink 080 - Disclosure - Note 17 - Contingent Liabilities and Commitments (Details) link:presentationLink link:definitionLink link:calculationLink 081 - Disclosure - Note 17 - Contingent Liabilities and Commitments (Details) - Summary of the Future Minimum Payments Required Under Leases link:presentationLink link:definitionLink link:calculationLink 082 - Disclosure - Note 19 - Selected Quarterly Financial Data (Unaudited) (Details) - Selected Quarterly Financial Data link:presentationLink link:definitionLink link:calculationLink 000 - Disclosure - Document And Entity Information link:presentationLink link:definitionLink link:calculationLink