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Deposits (Scheduled Maturities Of Time Deposits) (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Banking and Thrift [Abstract]    
Remainder of 2019 $ 1,003,978  
2020 1,803,664  
2021 330,610  
2022 70,868  
2023 28,889  
Thereafter 17,556  
Total time deposits $ 3,255,565 $ 3,196,546