Quarterly report pursuant to Section 13 or 15(d)

Registered Direct Equity Offering - Additional Information (Detail)

v3.6.0.2
Registered Direct Equity Offering - Additional Information (Detail) - USD ($)
 1 Months Ended 6 Months Ended
Sep. 30, 2016
Nov. 30, 2016
Stockholders Equity Note [Line Items]    
Proceeds from issuance of common shares   $ 8,990,000
Warrants issued included in closing costs   1,066,667
Fair value of placement agent warrants   $ 819,200
Proceeds allocated to financing expense   241,986
Issuance cost incurred   $ 577,214
Placement Agent    
Stockholders Equity Note [Line Items]    
Warrants to purchase common shares, shares 1,066,667 1,066,667
Class of warrants, exercise price $ 0.825 $ 0.825
Term of warrants 5 years 5 years
Percentage of shares, issued as warrants 8.00%  
Securities Purchase Agreement    
Stockholders Equity Note [Line Items]    
Number of shares to be sold 13,333,334  
Purchase price, per share $ 0.75  
Warrants to purchase common shares, shares 6,666,667 6,666,667
Class of warrants, exercise price $ 1.00 $ 1.00
Term of warrants 5 years 5 years
Proceeds from issuance of common shares $ 8,990,000  
Placement agent's fees, as a percentage of gross proceeds 8.00%