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

Collaborative Arrangements (Details)

v2.4.0.8
Collaborative Arrangements (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Research and development, net $ 10,337 $ 4,157 $ 21,126 $ 8,509
Collaborative Arrangement [Member]
       
Research and development, net $ 1,000 $ 166 $ 2,100 $ 317