Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.10.0.1
Subsequent Events - Additional Information (Detail) - USD ($)
 1 Months Ended 6 Months Ended
Jun. 30, 2018
Aug. 08, 2018
Jun. 30, 2018
Jun. 19, 2018
Dec. 31, 2017
Subsequent Event [Line Items]          
Preferred stock, shares outstanding 3,283   3,283   0
Exercise price per unit of warrant       $ 4.00  
Proceeds from issuance of warrants     $ 13,800    
Series A Convertible Preferred Stock [Member]          
Subsequent Event [Line Items]          
Preferred stock, shares converted 6,627        
Preferred stock, shares outstanding 2,531   2,531    
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Number of warrants issued   187,500      
Exercise price per unit of warrant   $ 4.00      
Proceeds from issuance of warrants   $ 800,000      
Subsequent Event [Member] | Series A Convertible Preferred Stock [Member]          
Subsequent Event [Line Items]          
Preferred stock, shares converted   500      
Preferred stock, shares outstanding   3,283      
Common Stock | Series A Convertible Preferred Stock [Member]          
Subsequent Event [Line Items]          
Convertible preferred stock, shares issued upon conversion 1,656,750        
Common Stock | Subsequent Event [Member] | Series A Convertible Preferred Stock [Member]          
Subsequent Event [Line Items]          
Convertible preferred stock, shares issued upon conversion   125,000