Stockholders' Equity - Summary of Warrants Issued and Outstanding (Detail)	12 Months Ended
Dec. 31, 2019 $ / shares shares
Class Of Warrant Or Right [Line Items]
Shares of Common Stock	521,060
Exercisable Warrants [Member] \| Warrants One [Member]
Class Of Warrant Or Right [Line Items]
Date of Issuance	Mar. 30, 2016
Date of Expiration	Mar. 30, 2021
Exercise Price \| $ / shares	$ 3.88
Shares of Common Stock	521,060

Exercise price per share or per unit of warrants or rights outstanding.

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

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant