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Stockholders' Equity - Summary Stock-Based Compensation (Details) - Stock options - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Adjustments to additional paid in capital, share-based compensation, requisite service period recognition (in dollars) $ 229,039 $ 108,568 $ 633,219 $ 356,846
Cost of revenue [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Adjustments to additional paid in capital, share-based compensation, requisite service period recognition (in dollars) 1,898 9,709 5,315 24,278
Selling and Marketing Expense [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Adjustments to additional paid in capital, share-based compensation, requisite service period recognition (in dollars) 5,342 3,324 16,090 42,967
General and Administrative Expense [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Adjustments to additional paid in capital, share-based compensation, requisite service period recognition (in dollars) $ 221,799 $ 95,535 $ 611,814 $ 289,601