Annual report pursuant to Section 13 and 15(d)

Condensed Financial Information of Registrant (Parent Company Only) - Additional information (Detail)

v3.22.0.1
Condensed Financial Information of Registrant (Parent Company Only) - Additional information (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]        
Cash   $ 0    
Parent Company [Member]        
Condensed Financial Statements, Captions [Line Items]        
Dividends $ 75,000,000.0 $ 0 $ 380,400,000 $ 2,800,000
FOA | Parent Company [Member]        
Condensed Financial Statements, Captions [Line Items]        
Percentage of restricted net assets to consolidated net assets   25.00%