Quarterly report pursuant to Section 13 or 15(d)

Loss Per Share (Additional Information) (Detail)

v3.19.1
Loss Per Share (Additional Information) (Detail)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Earnings Per Share [Abstract]    
Earnings Per Share, Potentially Dilutive Securities 7,529,006 8,800,821