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Property and Equipment (Schedule of Property and Equipment) (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,890,557us-gaap_PropertyPlantAndEquipmentGross $ 2,727,299us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization (2,239,527)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (1,846,652)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Total property and equipment, net 651,030us-gaap_PropertyPlantAndEquipmentNet 880,647us-gaap_PropertyPlantAndEquipmentNet
Computer Equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 792,268us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
754,088us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
Computer Equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Computer Equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 5 years  
Office Equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 171,649us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OfficeEquipmentMember
132,999us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OfficeEquipmentMember
Office Equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Office Equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 15 years  
Furniture and Fixtures    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 703,187us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
616,759us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Furniture and Fixtures | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 5 years  
Furniture and Fixtures | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 15 years  
Leasehold Improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,223,453us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
$ 1,223,453us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
Property and equipment, useful life (Textual) 3 – 15 years, or remaining lease term  
Leasehold Improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Leasehold Improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 15 years