Agreements (Details Narrative) - USD ($)	12 Months Ended
Agreements (Details Narrative) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Agreements [Line Items]
Purchases under manufacture and supply agreement	$ 1,100,000	$ 225,000	$ 300,000
Purchases under clinical supply agreement	43,000	244,000	505,000
Purchases under manufacturing agreement	826,000	855,000	2,200,000
Purchases under manufacturing services agreement	1,200,000	472,000	96,000
Purchases under service and supply master agreement	149,000	677,000	272,000
Total costs related to the license agreement	8,882,576	12,777,116
Maximum contingent liability	1,900,000
Tc 99m Tilmanocept
Agreements [Line Items]
Total costs related to the license agreement	955,000	777,000	353,000
Tilmanocept
Agreements [Line Items]
Total costs related to the license agreement	199,000	152,000	25,000
AstraZeneca
Agreements [Line Items]
Total costs related to the license agreement	$ 116,000	80,000	81,000
Alseres
Agreements [Line Items]
Total costs related to the license agreement		$ 5,000	$ 42,000