Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Additional Information (Details)

v3.6.0.2
Property and Equipment - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property Plant And Equipment [Line Items]      
Depreciation expense $ 495,347 $ 458,734 $ 371,603
Property and Equipment, Other      
Property Plant And Equipment [Line Items]      
Property and equipment, estimated useful Life 3 years    
Minimum | Tenant Improvement      
Property Plant And Equipment [Line Items]      
Property and equipment, estimated useful Life 6 years    
Maximum | Tenant Improvement      
Property Plant And Equipment [Line Items]      
Property and equipment, estimated useful Life 10 years