Acquisitions (Pro Forma Information Presents Combined Results Of Operations) (Details) (Taligen Therapeutics, Inc [Member], USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Taligen Therapeutics, Inc [Member]
Revenues	$ 125,834	$ 351,825	$ 243,412
Net income	$ 18,477	$ 60,469	$ 36,714
Earning per common share, Basic	$ 0.10	$ 0.33	$ 0.21
Earning per common share, Diluted	$ 0.10	$ 0.32	$ 0.20