4) Loans Held For Sale: Aggregate fair value - Loans Held for Sale (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Text Block [Abstract]
Aggregate Fair Value - Loans Held For Sale	$ 356,949,958	$ 213,457,632
Aggregate unpaid principal balance - Loans Held for Sale	344,480,058	206,417,122
Unrealized gain - Loans Held for Sale	$ 12,469,900	$ 7,040,510