Product Revenues, Net (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 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	148,682
Adjustments related to prior period sales	3,298
Credits/payments made	(131,202)
Balance at the end of the period	90,141
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	31,619
Credits/payments made	(36,763)
Balance at the end of the period	6,018
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	105,562
Adjustments related to prior period sales	3,225
Credits/payments made	(81,650)
Balance at the end of the period	79,796
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	486
Credits/payments made	(255)
Balance at the end of the period	571
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	11,015
Adjustments related to prior period sales	73
Credits/payments made	(12,534)
Balance at the end of the period	$ 3,756