Note 12 - Celsion Employee Benefit Plans (Detail) (USD $)	12 Months Ended			39 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011
Minimum Age For Employee Benefit Plan		21		21
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent				3.00%
Defined Benefit Plan, Contributions by Employer	$ 61,767	$ 60,630	$ 60,949