Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Held To Maturity Securities (Parenthetical) (Detail)

v3.21.2
Fair Value Measurements - Held To Maturity Securities (Parenthetical) (Detail)
5 Months Ended 9 Months Ended
Dec. 31, 2020
Sep. 30, 2021
Fair Value Disclosures [Abstract]    
Held to maturity debt instruments maturity date Apr. 08, 2021 Oct. 14, 2021