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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Inventories [Abstract]    
Raw materials $ 232 $ 197
Work-in-process 758 405
Finished goods 267 503
Total inventory, gross 1,257 1,105
Inventory reserves (332) 0
Total inventory, net $ 925 $ 1,105