Loss Per Share - Additional Information (Detail)	1 Months Ended
	May 31, 2016 shares
IPO [Member]
Earnings Loss Per Share [Line Items]
Number of common stock issued upon conversion of shares	6,900,000
Conversion of convertible preferred stock into common stock	23,481,956
Private Placement [Member]
Earnings Loss Per Share [Line Items]
Number of common stock issued upon conversion of shares	3,055,554