XML 22 R25.htm IDEA: XBRL DOCUMENT v3.20.1
Summary of Significant Accounting Policies - Schedule of Common Share Equivalents Included from Computation of Net Loss Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]    
Net loss $ (16,011) $ (14,065)
Net loss per share, basic and diluted $ (1.36) $ (1.56)
Weighted-average common shares outstanding, basic and diluted 11,799,468 9,005,352