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CONCENTRATION OF RISK - Long Lived Assets by Geographic Area (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Segment Reporting Information [Line Items]    
Long-lived assets $ 14,698 $ 11,808
United States [Member]
   
Segment Reporting Information [Line Items]    
Long-lived assets 14,441 11,512
Other [Member]
   
Segment Reporting Information [Line Items]    
Long-lived assets $ 257 $ 296