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Borrowed Funds - Summary of Borrowed Funds (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
FHLB advance, amount $ 0 $ 519,260
Securities sold under agreements to repurchase with retail customers, amount 128,454 71,739
Other borrowings, amount 235,471 96,801
Total Borrowed funds, Amount $ 363,925 $ 687,800
Weighted Average    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
FHLB advances, weighted average rate 0.00% 1.84%
Securities sold under agreements to repurchase with retail customer, weighted average rate 0.33% 0.42%
Other borrowings, weighted average rate 4.58% 4.64%
Total Borrowed funds, weighted average rate 3.08% 2.09%