Stockholders' Equity - Common Stock (Details) - USD ($)	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock option and warrant exercises	$ 685,101	$ 1,435,140
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)	71,667

Number of new stock issued during the period.

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-Name Accounting Standards Codification
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Period Type:	duration