8) Fair Value of Financial Instruments: Fair Value Assets Measured on a Nonrecurring Basis (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Impaired mortgage loans held for investment	$ 1,174,242	$ 1,297,356
Impaired real estate held for investment		4,249,000
Assets, Fair Value Disclosure, Nonrecurring	1,174,242	5,546,356
Fair Value, Inputs, Level 1
Impaired mortgage loans held for investment	0	0
Impaired real estate held for investment		0
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 2
Impaired mortgage loans held for investment	0	0
Impaired real estate held for investment		0
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 3
Impaired mortgage loans held for investment	1,174,242	1,297,356
Impaired real estate held for investment		4,249,000
Assets, Fair Value Disclosure, Nonrecurring	$ 1,174,242	$ 5,546,356