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Fair Value - Schedule of Estimated Change in Fair Value of MSRs (Details)
$ in Thousands
Mar. 31, 2020
USD ($)
Transfers and Servicing [Abstract]  
Weighted average prepayment speeds, 10% $ (52,979)
Weighted average prepayment speeds, 20% (100,320)
Weighted average discount rate, 10% (14,339)
Weighted average discount rate, 20% $ (27,843)