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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Inventories [Abstract]    
Raw materials and components $ 9,041 $ 5,971
Products in process 13,081 6,908
Finished products 6,656 1,916
Inventories $ 28,778 $ 14,795