3) Loans Held For Sale: Aggregate fair value - Loans Held for Sale (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Text Block [Abstract]
Aggregate Fair Value - Loans Held For Sale	$ 422,772,418	$ 213,457,632
Aggregate unpaid principal balance - Loans Held for Sale	406,407,323	206,417,122
Unrealized gain - Loans Held for Sale	$ 16,365,095	$ 7,040,510