Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Summary of Goodwill Allocated to Each Reporting Unit Consisted (Detail)

v3.21.2
Goodwill - Summary of Goodwill Allocated to Each Reporting Unit Consisted (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Goodwill [Line Items]              
Goodwill $ 1,298,796 $ 1,298,324 $ 128,750 $ 121,233 $ 121,754 $ 121,754 $ 121,137
Mortgage Originations [Member]              
Goodwill [Line Items]              
Goodwill 712,524     44,429      
Reverse Originations [Member]              
Goodwill [Line Items]              
Goodwill 405,445            
Commercial Originations [Member]              
Goodwill [Line Items]              
Goodwill 75,768     43,113      
Lender Services [Member]              
Goodwill [Line Items]              
Goodwill 102,250     25,247      
Portfolio Management              
Goodwill [Line Items]              
Goodwill $ 2,809     $ 8,444