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Property and Equipment (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 11,542,213us-gaap_PropertyPlantAndEquipmentGross $ 10,702,912us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation and amortization (10,582,738)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (9,514,346)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Total 959,475us-gaap_PropertyPlantAndEquipmentNet 1,188,566us-gaap_PropertyPlantAndEquipmentNet
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 67,341us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
67,341us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,585,659us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
2,547,686us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
Software    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 8,822,310us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember
8,020,982us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 66,903us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
$ 66,903us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember