Quarterly report pursuant to Section 13 or 15(d)

Registered Direct Equity Offerings - Additional Information (Detail)

v3.19.3
Registered Direct Equity Offerings - Additional Information (Detail)
$ / shares in Units, $ in Millions
Aug. 29, 2019
USD ($)
$ / shares
shares
Placement Agent  
Stockholders Equity Note [Line Items]  
Warrants to purchase common shares, shares | shares 498,105
Class of warrants, exercise price | $ / shares $ 0.40
Term of warrants 5 years
Percentage of shares, issued as warrants 8.80%
Subscription Agreements  
Stockholders Equity Note [Line Items]  
Number of shares to be sold | shares 5,639,500
Purchase price, per share | $ / shares $ 0.40
Warrants to purchase common shares, shares | shares 2,819,750
Class of warrants, exercise price | $ / shares $ 0.45
Term of warrants 5 years
Proceeds from issuance of common shares | $ $ 2.0