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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2013
item
Jun. 30, 2013
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Inventories disclosure          
Raw materials   $ 4,735 $ 4,735   $ 2,652
Work in process   2,876 2,876   2,524
Finished goods   5,863 5,863   7,275
Total inventories   13,474 13,474   12,451
Number of specific batches of Rienso recalled by Takeda 1        
Inventory expensed   500 502 598  
MuGard inventory
         
Inventories disclosure          
Total inventories   $ 200 $ 200