XML 60 R49.htm IDEA: XBRL DOCUMENT v3.21.2
Securities - Schedule of Other Securities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Schedule of Other Securities [Line Items]    
Other securities $ 274,645 $ 296,053
FRB and FHLB stock [Member]    
Schedule of Other Securities [Line Items]    
Other securities 36,222 33,222
Equity Securities With Readily Determinable Fair Values [Member]    
Schedule of Other Securities [Line Items]    
Other securities 66,316 134,197
Equity Securities Without Readily Determinable Fair Values [Member]    
Schedule of Other Securities [Line Items]    
Other securities $ 172,107 $ 128,634