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Deposits (Scheduled Maturities Of Time Deposits) (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Banking and Thrift [Abstract]    
Remainder of 2020 $ 2,351,819  
2021 492,301  
2022 83,698  
2023 32,914  
2024 21,891  
Thereafter 8,538  
Total time deposits $ 2,991,161 $ 3,104,765