Fair Value Measurements - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Held-to-maturity securities	$ 0
Cash and investments held in Trust Account	253,707,651	$ 253,569,459
Change in fair value of assets and liabilities	0	0
Cash
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and investments held in Trust Account		18,376
U.S. Treasury Bills
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Held-to-maturity securities		253,551,083
Cash and investments held in Trust Account		$ 253,551,083
Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and investments held in Trust Account	$ 253,707,651