Goodwill and Other Intangible Assets (Schedule of Identifiable Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 16,713
Accumulated Amortization	(463)
Intangible Assets, Net	16,250
Proprietary adjuvant technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,514
Accumulated Amortization	(240)
Intangible Assets, Net	11,274
Collaboration agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,199
Accumulated Amortization	(223)
Intangible Assets, Net	$ 4,976