Revenue And Credit Concentration (Consolidated Net Product Revenue Attributed To Largest Customers) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue, Major Customer [Line Items]
Total	50.00%	47.00%	47.00%	47.00%
Customer A [Member]
Revenue, Major Customer [Line Items]
Total	16.00%	17.00%	17.00%	18.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Total	21.00%	17.00%	18.00%	18.00%
Customer C [Member]
Revenue, Major Customer [Line Items]
Total	13.00%	13.00%	12.00%	11.00%