MSRs - Components of Servicing Income (Details) - Mortgages - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule Of Components Of Servicing Income [Line Items]
Servicing income	$ 285,745	$ 276,211	$ 702,127	$ 721,468
Total servicing income	$ 285,745	$ 276,211	$ 702,127	$ 721,468