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Property and Equipment (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross $ 14,022,829   $ 14,022,829   $ 13,242,050
Less: accumulated depreciation and amortization (12,666,732)   (12,666,732)   (12,054,989)
Total 1,356,097   1,356,097   1,187,061
Depreciation expense 314,106 $ 348,661 619,634 $ 718,033  
Furniture and fixtures          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 293,152   293,152   293,152
Equipment          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 1,113,720   1,113,720   1,052,199
Capitalized internal use and purchased software          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 12,157,072   12,157,072   11,475,683
Leasehold improvements          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross $ 458,885   $ 458,885   $ 421,016