Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	$ 606,628		$ 770,161
Accumulated Amortization	112,236		152,622
Net Intangible Assets	494,392		617,539
Vancocin
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	7,407		168,099
Accumulated Amortization	494		54,773
Net Intangible Assets	6,913	7,400	113,326
Product Rights | Cinryze
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	521,000		521,000
Accumulated Amortization	97,814		87,394
Net Intangible Assets	423,200		433,606
Product Rights | Plenadren
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	63,227		65,136
Accumulated Amortization	9,999		7,048
Net Intangible Assets	53,228		58,088
Product Rights | Buccolam
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	6,182		6,566
Accumulated Amortization	1,133		876
Net Intangible Assets	5,049		5,690
Contract Rights | Auralis Limited
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	8,812		9,360
Accumulated Amortization	2,796		2,531
Net Intangible Assets	$ 6,016		$ 6,829