Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Fair Value Liabilities Measured On Non-Recurring Basis Valuation Techniques (Parenthetical) (Detail)

v3.21.2
Fair Value Measurements - Schedule of Fair Value Liabilities Measured On Non-Recurring Basis Valuation Techniques (Parenthetical) (Detail)
Sep. 30, 2021
Dec. 31, 2020
Measurement Input, Constant Prepayment Rate [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Percentage of fair value weighted average 10 10