Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Subsequent Events (Details)

v3.19.1

Subsequent Events (Details) - Subsequent Event $ / shares in Units, $ in Millions	Apr. 09, 2019 USD ($) Agreement $ / shares shares	Apr. 05, 2019 shares
Subsequent Event [Line Items]
Number of underwriting agreements \| Agreement	2
Gross proceeds from public offerings \| $	$ 70.0
underwriting discounts and commissions and estimated offering expenses payable \| $	$ 4.6
Common Stock
Subsequent Event [Line Items]
Conversion of series A stock into common stock		1,000
Minimum ownership percentage to total number stock Issued and outstanding holder is prohibited from conversion		9.99%
Public Offering \| Class A Warrants
Subsequent Event [Line Items]
Warrants, exercise price \| $ / shares	$ 8.625
Class A warrants maturity date	Oct. 10, 2022
Public Offering \| Common Stock Agreement \| Class A Warrants
Subsequent Event [Line Items]
Warrants to purchase common stock	1,951,844
Share price (in dollars per share) \| $ / shares	$ 7.50
Public Offering \| Common Stock Agreement \| Common Stock
Subsequent Event [Line Items]
Shares issued	8,667,333
Public Offering \| Preferred Stock Agreement \| Class A Warrants
Subsequent Event [Line Items]
Warrants to purchase common stock	166,500
Share price (in dollars per share) \| $ / shares	$ 7,500
Public Offering \| Preferred Stock Agreement \| Series A Convertible Preferred Stock
Subsequent Event [Line Items]
Shares issued	666

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