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Property and Equipment - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Property Plant And Equipment [Line Items]        
Depreciation expense $ 145,038 $ 107,012 $ 266,455 $ 222,459
Tenant Improvement | Minimum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     6 years  
Tenant Improvement | Maximum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     10 years  
Property and Equipment, Other Types | Minimum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     3 years  
Property and Equipment, Other Types | Maximum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     5 years