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Business Segments - Revenues were generated from following geographic regions (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Revenue $ 5,334 $ 5,913 $ 11,068 $ 12,272
United States
       
Revenue 3,571 2,969 7,030 6,614
Rest of World
       
Revenue $ 1,763 $ 2,944 $ 4,038 $ 5,658