XML 106 R48.htm IDEA: XBRL DOCUMENT v3.20.1
Stock Based Awards - Summary of Stock Options Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Number of shares    
Number of Shares, Beginning balance 1,515,923 607,511
Number of Shares, Assumption of option plans associated with the merger   1,183,950
Number of Shares, Options granted 483,328  
Number of Shares, Options exercised (39,686) (3,643)
Number of Shares, Options cancelled (139,405) (271,895)
Number of Shares, Ending balance 1,820,160 1,515,923
Number of Shares, Vested and expected to vest 1,796,997  
Number of Shares, Exercisable 1,474,782  
Weighted Average Exercise Price    
Weighted Average Exercise Price, Beginning balance $ 18.65 $ 81.60
Weighted Average Exercise Price, Assumption of option plans associated with the merger   0.44
Weighted Average Exercise Price, Options granted 5.55  
Weighted Average Exercise Price, Options exercised 2.40 9.66
Weighted Average Exercise Price, Options cancelled 81.33 80.09
Weighted Average Exercise Price, Ending balance 10.70 $ 18.65
Weighted Average Exercise Price, Vested and expected to vest 10.75  
Weighted Average Exercise Price, Exercisable $ 11.31  
Weighted Average Remaining Contractual Life (in years)    
Weighted Average Remaining Contractual Life (in years) 6 years 7 months 6 days  
Weighted Average Remaining Contractual Life, Vested and expected to vest 6 years 7 months 6 days  
Weighted Average Remaining Contractual Life, Exercisable 6 years  
Aggregate Intrinsic Value, Options outstanding $ 18,957  
Aggregate Intrinsic Value, Vested and expected to vest 18,778  
Aggregate Intrinsic Value, Exercisable $ 16,311