Discontinued Operations (Details) (USD $)	12 Months Ended
	Dec. 31, 2009	Dec. 31, 2009 Ibis Biosciences, Inc. (Ibis)	Jan. 31, 2009 Ibis Biosciences, Inc. (Ibis) AMI
Discontinued operations
Total purchase price of acquired entity			$ 215,000,000
Gain on sale of Ibis Biosciences, Inc., before tax		202,500,000
Gain on sale of Ibis Biosciences, Inc., income tax expense		16,800,000
Components of discontinued operations
Total operating expenses		35,000
Loss from operations		(35,000)
Loss attributed to noncontrolling interest		6,000
Loss from discontinued operations	(29,000)	(29,000)
Gain on sale of Ibis Biosciences, Inc., net of tax	185,657,000	185,657,000
Net income from discontinued operations, net of tax	$ 185,628,000	$ 185,628,000