Product Revenues, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 M
Product revenues, net
Discount rate for payments made within 30 days (as a percent)	2.00%
Period prior to the labeled expiration date in which distributors have right to return unopened, unprescribed product (in months)	6
Period after the labeled expiration date in which distributors have right to return unopened, unprescribed product (in months)	12
Activity related to product revenues allowances and reserve categories
Balance at the beginning of the period	$ 69,363
Provision related to current period sales	71,289
Adjustments related to prior period sales	2,174
Credits/payments made	(63,000)
Balance at the end of the period	79,826
Trade Allowances
Activity related to product revenues allowances and reserve categories
Balance at the beginning of the period	11,162
Provision related to current period sales	15,841
Credits/payments made	(18,151)
Balance at the end of the period	8,852
Rebates, Chargebacks and Discounts
Activity related to product revenues allowances and reserve categories
Balance at the beginning of the period	52,659
Provision related to current period sales	49,941
Adjustments related to prior period sales	2,114
Credits/payments made	(37,770)
Balance at the end of the period	66,944
Product Returns
Activity related to product revenues allowances and reserve categories
Balance at the beginning of the period	340
Provision related to current period sales	106
Balance at the end of the period	446
Other Incentives
Activity related to product revenues allowances and reserve categories
Balance at the beginning of the period	5,202
Provision related to current period sales	5,401
Adjustments related to prior period sales	60
Credits/payments made	(7,079)
Balance at the end of the period	$ 3,584