MSRs - Narrative (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) sub-servicer	Dec. 31, 2020 USD ($)
Mortgage Servicing Rights MSR [Line Items]
Number of sub-servers | sub-servicer	2
Mortgage servicing rights
Mortgage Servicing Rights MSR [Line Items]
Residential mortgage loan aggregate principal balance | $	$ 91,727,121	$ 191,799,159