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Business Segments (Tables)
 6 Months Ended
Jun. 30, 2015
Segment Reporting [Abstract]  
Schedule of revenues generated from geographic regions

 

                           
    Three Months Ended   Six Months Ended  
    June 30,   June 30,  
    2015   2014   2015   2014  
                           
United States   $ 2,526   $ 5,295   $ 5,014   $ 10,791  
Brazil     928     398     1,654     437  
Rest of World     1,056     1,074     1,965     2,156  
    $ 4,510   $ 6,767   $ 8,633   $ 13,384  
 
Schedule of revenue by product group

 

                           
    Three Months Ended   Six Months Ended  
    June 30,   June 30,  
    2015   2014   2015   2014  
                           
Biometrics   $ 3,883   $ 6,029   $ 7,731   $ 12,210  
Imaging     522     574     696     697  
DSL royalties     105     164     206     477  
    $ 4,510   $ 6,767   $ 8,633   $ 13,384