Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Held To Maturity Securities (Detail)

v3.21.2
Fair Value Measurements - Held To Maturity Securities (Detail) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost $ 400,174,083 $ 400,085,021
US Treasury Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 400,174,083 400,085,021
Gross Holding Gain 6,944 5,549
Fair Value $ 400,181,027 $ 400,090,570