Summary of Significant Accounting Policies - Summary of basic and diluted net income (loss) per ordinary share (Detail) - USD ($)	4 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss)	$ (22,966)	$ 1,283,657
ClassA redeemable ordinary shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Interest income and realized gain from sale of treasury securities		1,845,877
Net earnings		$ 1,845,877
Redeemable Class Ordinary Shares, Basic and Diluted		27,600,000
Earnings Per Share, Basic and Diluted		$ 0.07
Non Redeemable Class B Ordinary Shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Interest income and realized gain from sale of treasury securities		$ 1,845,877
Net earnings	$ (22,966)	$ (562,220)
Redeemable Class Ordinary Shares, Basic and Diluted	6,000,000	6,794,262
Earnings Per Share, Basic and Diluted	$ 0.00	$ (0.08)
Net Income (Loss)	$ (22,966)	$ 1,283,657