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Summary Of Significant Accounting Policies - Securities (Details) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Class of Stock [Line Items] |  |  |  |
Anti-dilutive securities excluded from computation (in shares) | 2,103,827 | 7,836,210 | 2,103,827 | 7,836,210
Redeemable convertible preferred stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Anti-dilutive securities excluded from computation (in shares) | 0 | 6,013,941 | 0 | 6,013,941
Warrants to purchase redeemable convertible preferred stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Anti-dilutive securities excluded from computation (in shares) | 0 | 224,493 | 0 | 224,493
Warrants to purchase common stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Anti-dilutive securities excluded from computation (in shares) | 426,827 | 934,789 | 426,827 | 934,789
Common stock options |  |  |  |
Class of Stock [Line Items] |  |  |  |
Anti-dilutive securities excluded from computation (in shares) | 1,677,000 | 662,987 | 1,677,000 | 662,987

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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://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 + Details
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