Deposits - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Banking And Thrift [Abstract] | |||
Interest expense, Time deposits, $100,000 or more | $ 27.8 | $ 13.4 | $ 10.3 |
Brokered deposits for regulatory purposes | $ 314.2 |