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Property and Equipment (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 16,937,620 $ 14,534,665
Less accumulated depreciation (8,184,154) (7,385,714)
Property and equipment, net $ 8,753,466 7,148,951
Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 3 years  
Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 25 years  
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,122,582 1,122,582
Office buildings and improvements (25 years)    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 4,399,448 3,495,338
Property and equipment useful life 25 years  
Office buildings and improvements (25 years) | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 3 years  
Office buildings and improvements (25 years) | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 25 years  
Furniture, fixtures and equipment (3 to 10 years)    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 10,444,355 8,948,535
Furniture, fixtures and equipment (3 to 10 years) | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 3 years  
Furniture, fixtures and equipment (3 to 10 years) | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 10 years  
Automobiles (3 years)    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 971,235 $ 968,210
Property and equipment useful life 3 years