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Deposits - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract] |  |  |
Deposits | $ 22,803,143 |  | $ 22,666,039
Brokered deposits | 12,100,000 |  | 11,900,000
Retail and other deposits | 10,700,000 |  | 10,800,000
Stable interest-bearing deposits, total | 7,900,000 |  | 7,100,000
Brokered deposit placement fee | 4,000 | $ 5,000 |
Third party broker fees paid | 0 | $ 2,000 |
Deposits exceeding FDIC insurance limits | 751,000 |  | 571,000
Accrued interest on deposits | $ 61,000 |  | $ 50,000

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