Acquisitions, Investments, and Licenses - Schedule of Consolidated Assets and Non-Recourse Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 118,258	[1]	$ 185,798	[1]	$ 155,834	$ 27,361
Accounts receivable, net	21,210	[1]	19,767	[1]
Inventory, net	16,662	[1]	18,079	[1]
Prepaid expenses and other current assets	7,018	[1]	19,084	[1]
Total current assets	163,148	[1]	242,728	[1]
Property, plant and equipment, net	17,036	[1]	17,027	[1]
Intangible assets, net	65,553	[1]	74,533	[1]
Goodwill	224,769	[1]	226,373	[1]
Other assets	4,673	[1]	6,861	[1]
Total assets	1,295,242	[1]	1,391,516	[1]
Current liabilities:
Accounts payable	8,841	[1]	13,414	[1]
Accrued expenses	55,554	[1]	65,874	[1]
Total current liabilities	76,841	[1]	91,850	[1]
Other long-term liabilities	216,174	[1]	214,775	[1]
Total liabilities	407,898	[1]	518,537	[1]
SciVac | Variable Interest Entity, Primary Beneficiary
Current assets:
Cash and cash equivalents	57		2
Accounts receivable, net	422		283
Inventory, net	1,650		1,696
Prepaid expenses and other current assets	599		218
Total current assets	2,728		2,199
Property, plant and equipment, net	1,828		1,374
Intangible assets, net	951		1,111
Goodwill	1,634		1,821
Other assets	255		261
Total assets	7,396		6,766
Current liabilities:
Accounts payable	843		1,136
Accrued expenses	5,481		6,498
Notes payable	4,193		1,537
Total current liabilities	10,517		9,171
Other long-term liabilities	2,568		1,240
Total liabilities	$ 13,085		$ 10,411

[1] As of September 30, 2014 and December 31, 2013, total assets include $7.4 million and $6.7 million, respectively, and total liabilities include $13.1 million and $10.4 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.