Annual report pursuant to Section 13 and 15(d)

Selected Balance Sheet Data - Summary of Net Change in Carrying Value of MSRs (Detail)

v3.20.4
Selected Balance Sheet Data - Summary of Net Change in Carrying Value of MSRs (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Beginning balance $ 2,002 $ 2,209
Additions 441 337
Amortization (546) (544)
Ending balance $ 1,897 $ 2,002