Fair Value Measurements - Level 3, Inputs, Recurring (Details) - Level 3 - Recurring	Mar. 31, 2020 item	Dec. 31, 2019 item USD ($)
Loans Held for Sale
Significant unobservable inputs used in the fair value measurements
Loans Held-for-sale, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Loans Held-for-sale, Measurement Input [Extensible List]	us-gaap:MeasurementInputPriceVolatilityMember	us-gaap:MeasurementInputPriceVolatilityMember
Loans Held for Sale | Weighted average
Significant unobservable inputs used in the fair value measurements
Loans Held-for-sale, Measurement Input	0.93	0.95
Loans Held for Sale | Minimum
Significant unobservable inputs used in the fair value measurements
Loans Held-for-sale, Measurement Input	0.90	0.92
Loans Held for Sale | Maximum
Significant unobservable inputs used in the fair value measurements
Loans Held-for-sale, Measurement Input	0.94	0.96
MSR
Significant unobservable inputs used in the fair value measurements
Servicing Asset, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:ValuationTechniqueDiscountedCashFlowMember
MSR | Constant Prepayment Rate
Significant unobservable inputs used in the fair value measurements
Servicing Asset, Measurement Input	0.1698	13.16
MSR | Discount Rate
Significant unobservable inputs used in the fair value measurements
Servicing Asset, Measurement Input	0.1101	11.14