Earnings Per Share - Summary of Potentially Diluted Basic EPS (Details)	12 Months Ended
Dec. 31, 2018 shares
Stock options
Earnings Per Share [Line Items]
Amounts that could potentially dilute basic EPS in the future	982,324
Restricted stock units (RSU)
Earnings Per Share [Line Items]
Amounts that could potentially dilute basic EPS in the future	295,882
Warrants \| Private placement
Earnings Per Share [Line Items]
Amounts that could potentially dilute basic EPS in the future	6,160,000
Warrants \| Public offering
Earnings Per Share [Line Items]
Amounts that could potentially dilute basic EPS in the future	9,823,072

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.

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration