Acquisition of Molecular Insight Pharmaceuticals, Inc (Details) (USD $)	3 Months Ended		6 Months Ended					3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013	Jan. 18, 2013	Dec. 31, 2012	Jun. 30, 2013 Molecular Insight Pharmaceuticals Inc [Member]	Mar. 31, 2013 Molecular Insight Pharmaceuticals Inc [Member]	Jun. 30, 2013 Molecular Insight Pharmaceuticals Inc [Member]	Jan. 18, 2013 Molecular Insight Pharmaceuticals Inc [Member]
Business Acquisition [Line Items]
Original Shares Issued For Acquisition						4,566,210
Shares For Acquisition Held In Escrow						500,000
Shares For Acquisition Returned From Escrow						93,847
Maximum Milestone Payment Specified Commercial Events	$ 23,000,000		$ 23,000,000
Maximum Milestone Payment For Achieving Sales Targets	70,000,000		70,000,000
Business Acquisition, Cost of Acquired Entity, Transaction Costs	790,000		790,000		40,000
Business Acquisition Contributed Revenue								417,000		746,000
Business Acquisition Increase Decrease Net Income Loss								3,184,000		6,359,000
Equity issuance costs in connection with acquisition of subsidiary			45,000	0
Progenics common stock consideration									11,265,000
Acquisition-related contingent consideration liability	15,900,000	0	15,900,000	0			0				15,900,000
Business Entity Acquisition, Cost of Acquired Entity, Purchase Price	11,265,000	0	11,265,000	0							27,165,000
Cash acquired in acquisition of subsidiary											1,888,000
Business Acquisition, Purchase Price Allocation, Current Assets, Receivables											56,000
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets											529,000
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment											249,000
Business Acquisition, Purchase Price Allocation, Current Liabilities											(2,876,000)
Deferred tax liability - long term	(12,683,000)		(12,683,000)				0				(12,683,000)
Business Entity Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net											(12,837,000)
Intangible assets	32,300,000		32,300,000				0				32,300,000
Business Acquisition Tangible And Intangible Assets Acquired Liabilities Assumed											19,463,000
Goodwill	7,702,000		7,702,000				0				7,702,000
Business Acquisition Transaction Costs Excluded From Pro Forma Information	40,000		790,000
Business Acquisition, Pro Forma Revenue	1,801,000	1,836,000	4,032,000	4,148,000
Business Acquisition, Pro Forma Net Income (Loss)	$ (12,223,000)	$ (17,740,000)	$ (24,685,000)	$ (38,011,000)
Business Acquisition Pro Forma Earnings Per Share Basic And Diluted	$ (0.24)	$ (0.46)	$ (0.49)	$ (0.99)