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Net Loss Per Share - Potential shares excluded from calculation (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2019
Convertible promissory notes
Net Loss Per Share
Aggregate principal amount	$ 530,000	$ 530,000	$ 530,000
Redeemable convertible preferred stock, as converted
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share		4,117,089
Stock Options
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share	903,847	353,565
Warrants
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share	100,000

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Face (par) amount of debt instrument at time of issuance.

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