Anchen Acquisition (Details) (Anchen Acquisition [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Nov. 17, 2011
Anchen Acquisition [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Cash Paid		$ 412,753
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles	(3,786)
Post-close adjustment, consideration collected for Anchen	$ 3,786