MSRs - Narrative (Details)	9 Months Ended
	Sep. 30, 2020 USD ($) numberOfMortgageSub-servicers	Sep. 30, 2019 USD ($)
Mortgage Servicing Rights MSR [Line Items]
Number of licensed sub-servicers | numberOfMortgageSub-servicers	2
Mortgage servicing rights
Mortgage Servicing Rights MSR [Line Items]
Loans associated with MSRs | $	$ 239,180,324	$ 359,718,840