Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Collaborative Arrangements (Details Textual)

v2.4.0.6
Collaborative Arrangements (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Research and development, net $ 10,789 $ 4,352
Collaborative Arrangement [Member]
   
Research and development, net $ 1,000 $ 150