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Summary Of Significant Accounting Policies - Securities (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Class of Stock [Line Items]
Anti-dilutive securities excluded from computation	1,936,279	6,411,163	1,936,279	6,411,163
Redeemable Preferred Stock [Member]
Class of Stock [Line Items]
Anti-dilutive securities excluded from computation	0	5,202,940	0	5,202,940
Warrants to purchase redeemable convertible preferred stock
Class of Stock [Line Items]
Anti-dilutive securities excluded from computation	0	203,549	0	203,549
Warrants to purchase common stock
Class of Stock [Line Items]
Anti-dilutive securities excluded from computation	461,273	934,789	461,273	934,789
Common stock options
Class of Stock [Line Items]
Anti-dilutive securities excluded from computation	1,475,006	69,885	1,475,006	69,885

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-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

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- Definition

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+ References

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