Commitments and Contingencies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2012 Scenario, Forecast [Member]
Commitments and Contingencies [Line Items]
Remaining total commitments with Lonza	$ 190,000		$ 190,000
Payments for Legal Settlements						38,000
Gain on intellectual property settlement	53,377	0	53,377	0
Accrued royalties	$ 55,758		$ 55,758		$ 82,010