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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]

Property and equipment are comprised of the following:

 

    June 30,     December 31,  
    2012     2011  
Computer hardware and purchased software   $ 281,846     $ 241,154  
Leasehold improvements     220,166       215,680  
Furniture and fixtures     88,322       79,722  
                 
      590,334       536,556  
Less: accumulated depreciation and amortization     (518,222 )     (503,785 )
Property and equipment, net   $ 72,112     $ 32,771