Quarterly report pursuant to Section 13 or 15(d)

Loans - Summary of Total Loans Held in Portfolio (Parenthetical) (Details)

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Loans - Summary of Total Loans Held in Portfolio (Parenthetical) (Details) - Organic Loans - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]    
Deferred fees, cost, premium and discount $ (11.9) $ (8.2)
SBA Loans    
Accounts Notes And Loans Receivable [Line Items]    
Unguaranteed portion of U.S loans $ 67.4 $ 70.8