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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2013
Property and Equipment [Abstract]  
Property and equipment
Property and equipment was:

 
 
June 30, 2013
  December 31, 2012 
Equipment
 
$
1,219,900
  
$
1,171,900
 
Furniture
  
380,200
   
380,200
 
Leasehold improvements
  
147,500
   
147,500
 
 
  
1,747,600
   
1,699,600
 
Less: accumulated depreciation and amortization
  
1,393,100
   
1,340,700
 
 
 
$
354,500
  
$
358,900