4) Loans Held For Sale: Aggregate fair value - Loans Held for Sale (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Text Block [Abstract]
Aggregate Fair Value - Loans Held For Sale	$ 281,052,576	$ 213,457,632
Aggregate unpaid principal balance - Loans Held for Sale	272,772,415	206,417,122
Unrealized gain - Loans Held for Sale	$ 8,280,161	$ 7,040,510