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v3.19.2

Warrants - Schedule of Warrants Issued and Outstanding (Details) | 3 Months Ended
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Mar. 31, 2019 $ / shares shares
Class Of Warrant Or Right [Line Items] |
Number of warrant shares | 156,294
Issuance Date, November 2012 Tranche One |
Class Of Warrant Or Right [Line Items] |
Exercise price | $ / shares | $ 6.00
Number of warrant shares | 7
Year of expiration | 2028
Issuance Date, November 2012 Tranche Two |
Class Of Warrant Or Right [Line Items] |
Exercise price | $ / shares | $ 6.00
Number of warrant shares | 927
Year of expiration | 2020
Issuance Date, November 2012 Tranche Three |
Class Of Warrant Or Right [Line Items] |
Exercise price | $ / shares | $ 14.50
Number of warrant shares | 22
Year of expiration | 2028
Issuance Date, August 2016 |
Class Of Warrant Or Right [Line Items] |
Exercise price | $ / shares | $ 0.15
Number of warrant shares | 155,338
Year of expiration | 2023

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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