Note 5 - Acquisition of EGEN, Inc. (Tables)

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

Consideration Paid at Closing
Cash, net of cash acquired	$	2,821,000
Celsion common stock (2,712,188 shares valued at $3.48 which was the last closing price of our common stock at the time of closing the transaction on June 20, 2014)		9,438,000
Future Consideration
Holdback Shares (670,070 shares of Celsion common stock which were discounted by 38% to reflect the cost of the restriction)		1,441,000
Earn-Out Payments (at fair value*)		13,878,000
Total fair value of consideration	$	27,578,000

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Property and equipment, net		35,000
In-process research and development		25,802,000
Goodwill		1,976,000
Total assets:		27,813,000
Accounts payable and accrued liabilities		(235,000	)
Net assets acquired	$	27,578,000

Business Acquisition, Pro Forma Information [Table Text Block]

	Year ended December 31,
	2014			2013
Revenues	$	500,000		$	627,628
Loss from operations		(24,898,725	)		(18,247,339	)
Net loss applicable to common shareholders		(25,662,572	)		(15,952,832	)