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Summary of Significant Accounting Policies - Anti-dilutive weighted average diluted common shares (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Total potentially dilutive shares	4,900,969	5,666,947
Restricted stock units
Total potentially dilutive shares	105,306	60,355
Options
Total potentially dilutive shares	3,429,342	2,262,438
Warrants
Total potentially dilutive shares	1,366,321	3,344,154

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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