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Deposits - Summary of Total Deposits (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Banking and Thrift, Other Disclosures [Abstract]    
Deposits - interest bearing $ 21,192,004 $ 20,826,692
Deposits - non-interest bearing 2,022 1,432
Total deposits $ 21,194,026 $ 20,828,124