Goodwill and Other Intangible Assets (Schedule of Identifiable Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 12,856	$ 13,884
Accumulated Amortization	(1,851)	(1,307)
Intangible Assets, Net	11,005	12,577
Collaboration agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,999	4,319
Accumulated Amortization	(892)	(629)
Intangible Assets, Net	3,107	3,690
Proprietary adjuvant technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,857	9,565
Accumulated Amortization	(959)	(678)
Intangible Assets, Net	$ 7,898	$ 8,887