Loss Per Share - Additional Information (Detail) - shares		1 Months Ended
	May 11, 2016	May 31, 2016
IPO [Member]
Earnings Loss Per Share [Line Items]
Number of common stock issued upon conversion of shares	6,900,000	6,900,000
Conversion of convertible preferred stock into common stock	23,481,956	23,481,956
Private Placement [Member]
Earnings Loss Per Share [Line Items]
Number of common stock issued upon conversion of shares	3,055,554	3,055,554