Acquisitions, Investments, and Licenses - Schedule of Consolidated Assets and Non-Recourse Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012		Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 155,834	[1]	$ 27,361	[1]	$ 23,428	$ 71,516
Accounts receivable, net	21,372	[1]	21,162	[1]
Inventory, net	19,516	[1]	22,261	[1]
Prepaid expenses and other current assets	19,551	[1]	7,873	[1]
Total current assets	241,277	[1]	78,657	[1]
Property, plant and equipment, net	17,027	[1]	16,526	[1]
Intangible assets, net	77,333	[1]	84,238	[1]
Goodwill	222,340	[1]	80,450	[1]
Other assets	7,003	[1]	2,777	[1]
Total assets	1,382,982	[1]	289,830	[1]
Current liabilities:
Accounts payable	13,631	[1]	10,200	[1]
Accrued expenses	43,269	[1]	24,656	[1]
Total current liabilities	71,377	[1]	52,382	[1]
Other long-term liabilities	234,762	[1]	34,168	[1]
Total liabilities	515,056	[1]	86,550	[1]
SciVac [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	136		174
Accounts receivable, net	205		387
Inventory, net	1,653		1,092
Prepaid expenses and other current assets	185		199
Total current assets	2,179		1,852
Property, plant and equipment, net	1,410		1,539
Intangible assets, net	1,122		1,154
Goodwill	841		796
Other assets	312		231
Total assets	5,864		5,572
Current liabilities:
Accounts payable	1,129		1,108
Accrued expenses	5,969		2,859
Notes payable	1,284		0
Total current liabilities	8,382		3,967
Other long-term liabilities	279		1,529
Total liabilities	$ 8,661		$ 5,496

[1] As of September 30, 2013 and December 31, 2012, total assets include $5.9 million and $5.6 million, respectively, and total liabilities include $8.7 million and $5.5 million, respectively related to SciVac Ltd ("SciVac"), previously known as SciGen (I.L.) Ltd, a consolidated variable interest entity. SciVac’s consolidated assets are owned by SciVac and SciVac’s consolidated liabilities have no recourse against us. Refer to Note 5.