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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
Jan. 01, 2020
Dec. 31, 2019
Mar. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Remaining purchase discount on loans   $ 50,958  
Interest receivable     $ 32,998
Cumulative Effect, Period Of Adoption, Adjustment      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Remaining purchase discount on loans $ (5,469)