Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.7.0.1
Subsequent Event - Additional Information (Detail) - Subsequent Event [Member] - Series A Preferred Stock [Member]
Jul. 25, 2017
USD ($)
shares
$ / shares
Subsequent Event [Line Items]  
Convertible preferred stock | $ $ 3,000,000
Convertible shares of common stock | shares 12,000,000
Fixed conversion price | $ / shares $ 0.25
Preferred Stock Issued Upon Second Closing [Member]  
Subsequent Event [Line Items]  
Convertible preferred stock | $ $ 1,698,000
Warrants to purchase common stock, issued | shares 6,024,124
Term of warrants 7 years
Warrants exercise price per share | $ / shares $ 0.31