XML 14 R33.htm IDEA: XBRL DOCUMENT v2.4.0.8
Intangible Assets - Carrying Value of Intangibles Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
Total identifiable intangible assets $ 1,870 $ 1,870
CERE-110 for the treatment of Alzheimer's disease ("IPR&D") [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Total identifiable intangible assets 1,640 1,640
CERE-120 for the treatment of Parkinson's disease ("IPR&D") [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Total identifiable intangible assets $ 230 $ 230