Note 3 - Net Loss Per Share - Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Basic and diluted, Net loss attributable to Progenics	$ (16,360)	$ (12,655)
Weighted-average shares - basic and diluted (in shares)	70,196	69,946
Net loss per share attributable to Progenics - basic and diluted (in dollars per share)	$ (0.23)	$ (0.18)