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Software development and intellectual property licenses (Tables)
3 Months Ended
Mar. 31, 2015
Software Development Costs and Intellectual Property Licenses  
Summarizes the components of software development and intellectual property licenses
   At At 
   March 31, December 31, 
   2015 2014 
 Internally developed software costs  $247 $262 
 Payments made to third-party software developers   157  210 
 Total software development costs  $404 $472 
         
 Intellectual property licenses  $23 $23 
Amortization of software development costs and intellectual property licenses
    For the Three Months Ended March 31,
    2015 2014
 Amortization of capitalized software development      
  costs and intellectual property licenses  $147 $58