Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	$ 608,348	$ 770,161
Accumulated Amortization	104,819	152,622
Net Intangible Assets	503,529	617,539
Vancocin
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	7,407	168,099
Accumulated Amortization		54,773
Net Intangible Assets	7,407	113,326
Product Rights | Cinryze
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	521,000	521,000
Accumulated Amortization	92,602	87,394
Net Intangible Assets	428,398	433,606
Product Rights | Plenadren
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	64,966	65,136
Accumulated Amortization	8,652	7,048
Net Intangible Assets	56,314	58,088
Product Rights | Buccolam
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	6,174	6,566
Accumulated Amortization	978	876
Net Intangible Assets	5,196	5,690
Contract Rights | Auralis Limited
Finite-Lived Intangible Assets Disclosures
Gross Intangible Assets	8,801	9,360
Accumulated Amortization	2,587	2,531
Net Intangible Assets	$ 6,214	$ 6,829