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Segment Reporting and Concentrations (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Segment Reporting Information [Line Items]    
Revenues $ 14,066 $ 16,903
United States
   
Segment Reporting Information [Line Items]    
Revenues 7,989 11,911
The Netherlands
   
Segment Reporting Information [Line Items]    
Revenues 2,631 2,057
United Kingdom
   
Segment Reporting Information [Line Items]    
Revenues 1,893 1,851
Other - principally Europe [Member]
   
Segment Reporting Information [Line Items]    
Revenues $ 1,553 $ 1,084