3) Investments: Residential Real Estate Investment (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Real estate held for investment (net of accumulated depreciation)	$ 117,055,398	$ 121,558,222
Residential Real Estate
Real estate held for investment (net of accumulated depreciation)	23,420,598	29,507,431
Residential Real Estate | California
Real estate held for investment (net of accumulated depreciation)	1,565,639	2,644,321
Residential Real Estate | Florida
Real estate held for investment (net of accumulated depreciation)	5,158,218	6,534,277
Residential Real Estate | Ohio
Real estate held for investment (net of accumulated depreciation)	10,000	10,000
Residential Real Estate | South Carolina
Real estate held for investment (net of accumulated depreciation)	205,000	0
Residential Real Estate | Tennessee
Real estate held for investment (net of accumulated depreciation)	0	105,260
Residential Real Estate | Texas
Real estate held for investment (net of accumulated depreciation)	0	139,174
Residential Real Estate | Utah
Real estate held for investment (net of accumulated depreciation)	16,005,560	19,598,218
Residential Real Estate | Washington
Real estate held for investment (net of accumulated depreciation)	$ 476,181	$ 476,181