Annual report pursuant to Section 13 and 15(d)

Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail)

v3.8.0.1
Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Numerator                        
Net loss $ (3,740) $ (6,469) $ (169) $ (205) $ (486) $ (268) $ (238) $ (242) $ (828) $ (10,583) $ (1,234) $ (828)
Denominator                        
Weighted average number of common shares outstanding                 21,230 4,794,421 21,230 21,230
Basic and diluted net loss per common share $ (0.32) $ (0.90) $ (7.96) $ (9.66) $ (22.89) $ (12.62) $ (11.21) $ (11.40) $ (39.00) $ (2.21) $ (58.13) $ (39.00)