Stock Based Compensation - Stock-Based Compensation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stock Based Compensation
Total stock-based compensation expense	$ 2,988,544	$ 2,023,874
Research and development expense
Stock Based Compensation
Total stock-based compensation expense	868,603	579,641
Sales and marketing expense
Stock Based Compensation
Total stock-based compensation expense	160,837	96,730
General and administrative expense
Stock Based Compensation
Total stock-based compensation expense	1,959,104	$ 1,347,503
Stock options and RSUs
Stock Based Compensation
Unrecognized stock-based compensation expense	$ 5,671,503
Expected weighted average period to be recognized	2 years 3 months 18 days
Minimum | Employee stock options
Estimated grant-date fair value of stock options calculated using the Black-Scholes option-pricing model
Weighted-average volatility (as a percent)	143.10%	87.40%
Weighted-average expected term (years)	5 years	5 years 1 month 6 days
Risk-free interest rate (as a percent)	1.50%	2.60%
Maximum | Employee stock options
Estimated grant-date fair value of stock options calculated using the Black-Scholes option-pricing model
Weighted-average volatility (as a percent)	145.90%	105.90%
Weighted-average expected term (years)	5 years 9 months 18 days	5 years 9 months 18 days
Risk-free interest rate (as a percent)	1.90%	2.90%