Intangible Assets and Goodwill (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		1 Months Ended		3 Months Ended								6 Months Ended		6 Months Ended		6 Months Ended		6 Months Ended			6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Feb. 28, 2013 Bristol-Myers Squibb [Member]		Jun. 30, 2013 Bristol-Myers Squibb [Member]	Feb. 28, 2013 Incline Therapeutics, Inc. [Member]	Jun. 30, 2013 In Process Research and Development [Member]	Dec. 31, 2012 In Process Research and Development [Member]	Jun. 30, 2013 Recothrom Option [Member]	Dec. 31, 2012 Recothrom Option [Member]	Jun. 30, 2013 ProFibrix Option [Member]	Dec. 31, 2012 ProFibrix Option [Member]	Jun. 30, 2013 Customer relationships [Member]	Dec. 31, 2012 Customer relationships [Member]	Jun. 30, 2013 Distribution agreement [Member]	Dec. 31, 2012 Distribution agreement [Member]	Jun. 30, 2013 Trademarks [Member]	Dec. 31, 2012 Trademarks [Member]	Jun. 30, 2013 Product License [Member]	Dec. 31, 2012 Product License [Member]	Feb. 28, 2013 Product License [Member] Bristol-Myers Squibb [Member]	Jun. 30, 2013 Cleviprex milstones [Member]	Dec. 31, 2012 Cleviprex milstones [Member]
Intangible Assets and Goodwill [Line Items]
Weighted Average Useful Life	6 years 1 month 6 days				2 years								8 years		5 years 8 months 12 days		8 years		5 years 8 months 12 days			13 years
Gross Carrying Amount	$ 92,606	$ 60,606											$ 7,457	$ 7,457	$ 9,125	$ 9,125	$ 3,024	$ 3,024	$ 71,000	$ 39,000		$ 2,000	$ 2,000
Accumulated Amortization	(21,620)	(10,530)											(4,868)	(4,106)	(4,669)	(3,469)	(1,974)	(1,665)	(9,932)	(1,129)		(177)	(161)
Net Carrying Amount	70,986	50,076											2,589	3,351	4,456	5,656	1,050	1,359	61,068	37,871		1,823	1,839
Collaboration term			2 years
Intangible asset																					32,000
Option			62,000	[1]		62,000
Indefinite-lived Intangible Assets	$ 391,500	$ 69,500					$ 319,500	$ 69,500	$ 62,000	$ 0	$ 10,000	$ 0

[1] Assets Acquired: (in thousands)Product license $32,000Option 62,000Goodwill 21,000Total Assets $115,000Total cash price paid upon acquisition $115,000