Annual report pursuant to Section 13 and 15(d)

Net Loss Per Common Share - Additional Information (Detail)

v3.19.1
Net Loss Per Common Share - Additional Information (Detail) - Threshold
Aug. 01, 2017
shares
Earnings Per Share [Line Items]  
Common stock shares issued in exchange of each share 7.7844
Reverse stock split of common stock conversion ratio 11
Reverse stock split of common stock, description 11-for-1 reverse stock split