Accrued Expenses And Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Accrued Expenses And Other Current Liabilities [Abstract]
Rebates and returns	$ 48,115	$ 24,352
Payroll, bonus and employee benefits liabilities	10,470	7,283
Clinical development and research liabilities	4,872	3,964
Selling and commercial liabilities	4,149	2,880
Interest payable	1,375	1,196
Other current liabilities	7,002	9,315
Total accrued expenses and other current liabilities	$ 75,983	$ 48,990