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Stockholders' Equity/(Deficit) - Summary of Common Stock Warrants Outstanding (Detail) | 12 Months Ended
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Dec. 31, 2018 $ / shares shares
Class of Warrant or Right [Line Items] |
Common Stock Warrants | 885,625
Class of Warrant One [Member] |
Class of Warrant or Right [Line Items] |
Common Stock Warrants | 120,000
Exercise Price | $ / shares | $ 3.52
Termination Date | Jan. 10, 2021
Class of Warrant Two [Member] |
Class of Warrant or Right [Line Items] |
Common Stock Warrants | 65,625
Exercise Price | $ / shares | $ 12.00
Termination Date | Dec. 07, 2021
Class of Warrant Three [Member] |
Class of Warrant or Right [Line Items] |
Common Stock Warrants | 700,000
Exercise Price | $ / shares | $ 7.16
Termination Date | Feb. 11, 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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