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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block] Property and equipment as of December 31, 2013 and 2012 consists of the following:

    As of December 31,  
    2013     2012  
Computer equipment   $ 14,307,205     $ 14,210,373  
Furniture and fixtures     2,726,959       2,740,089  
Leasehold improvements     3,401,591       3,354,575  
      20,435,755       20,305,037  
Less accumulated depreciation and amortization     16,035,351       14,633,037  
Property and equipment, net   $ 4,400,404     $ 5,672,000  
Capitalized Software And Website Development Costs [Table Text Block] A summary of the activity of capitalized software and Website development costs is as follows:

Balance December 31, 2012   $ 7,691,591  
Additions     732,147  
Deletions     (582,231 )
Balance December 31, 2013   $ 7,841,507