Revenue Recognition (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Jul. 31, 2012	Dec. 31, 2011
Revenue Recognition (Textual)[ Abstract]
Unearned revenue recorded as current liability	$ 73,730
Unearned revenue recorded as long-term liability	1,216,547
Patent expiration date	Jun. 30, 2030
Amount of non-refundable option fee	500,000
Sublicense execution payment		175,000
Navidea common stock value	306,357	1,146,000	306,357
Navidea common stock, shares	1,150,000	300,000
Contingent milestone payments	2,900,000
Milestone payments	$ 2,500,000
Issuance of additional common stock	550,000
Issuance of additional shares when certain cumulative net sales of the approved product are achieved	400,000