Quarterly report pursuant to Section 13 or 15(d)

Fair value measurements (Details)

Fair value measurements (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Fair Value, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Marketable Securities Held In Trust [Member]    
Assets, Fair Value Disclosure [Abstract]    
Marketable securities held in Trust Account [1] $ 318,009,666 $ 316,958,514
[1] Quoted prices in active markets for identical assets or liabilities. An active market for an asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.