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Property and Equipment
12 Months Ended
Dec. 31, 2012
Property and Equipment [Abstract]  
Property and Equipment
3. 
Property and Equipment

Property and equipment as of December 31, 2012 and 2011 consisted of the following:

   
2012
  
2011
 
Equipment
 $1,171,900  $1,077,200 
Furniture
  380,200   236,000 
Leasehold improvements
  147,500   23,000 
    1,699,600   1,336,200 
Less: accumulated depreciation and amortization
  1,340,700   1,292,300 
$358,900$43,900

Aggregate property and equipment depreciation expense for the years ended December 31, 2012 and 2011 was $93,600 and $51,600, respectively.