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Property and Equipment (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross $ 10,881,335   $ 10,702,912
Less: accumulated depreciation and amortization (9,799,591)   (9,514,346)
Total 1,081,744   1,188,566
Depreciation expense 255,972 705,467  
Furniture and fixtures
     
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 67,341   67,341
Equipment
     
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 2,552,787   2,547,686
Software
     
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 8,194,304   8,020,982
Leasehold improvements
     
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross $ 66,903   $ 66,903