Registration of securities issued in business combination transactions

Shareholders' Equity - Warrants (Detail)

v3.20.4
Shareholders' Equity - Warrants (Detail) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Public Warrants    
Shareholders' Equity    
Period after business combination when warrants become exercisable 30 days 30 days
Period after initial public offering when warrants become exercisable   12 months
Period to file registration statement after a business combination 15 days 15 days
Warrant expiration period 5 years 5 years
Redemption price (in dollar per warrant) $ 0.01 $ 0.01
Notice period of warrant redemption 30 days 30 days
Minimum price per share of ordinary shares as condition to redeem warrants (in dollar per share) $ 18.00 $ 18.00
Number of trading days within 30-trading day 20 days 20 days
Period within which the 20 trading days at minimum price of ordinary shares 30 days 30 days
Share price that triggers warrant exercise price adjustment (in dollar per share) $ 9.20 $ 9.20
Percentage gross proceeds from warrant of the total equity proceeds that triggers warrant exercise price adjustment 60.00% 60.00%
Number of trading days within 30-trading day 20 days 20 days
Ordinary share price with certain period that triggers price adjustment (in dollar per share) $ 9.20 $ 9.20
Warrant exercise price when price of ordinary shares during the 20-trading day period after business combination falls below $9.20 (as a percent of higher of the market value and the newly issued price) 115.00% 115.00%
Warrants redemption trigger price (as a percent of higher of the market value and the newly issued price) 180.00% 180.00%
Private Placement Warrants    
Shareholders' Equity    
Period after business combination when warrants shares can be sold 30 days 30 days