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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials $ 602 $ 255
Work in process 3,850 3,419
Finished goods 3,405 1,986
Inventory, gross 7,857 5,660
Reserve for obsolescence (397) (527)
Inventory, net $ 7,460 $ 5,133