3) Investments: Residential Real Estate Investment (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Real estate held for investment (net of accumulated depreciation)	$ 121,282,747	$ 121,558,222
Residential Real Estate
Real estate held for investment (net of accumulated depreciation)	27,856,849	29,507,431
Residential Real Estate | California
Real estate held for investment (net of accumulated depreciation)	2,256,741	2,644,321
Residential Real Estate | Florida
Real estate held for investment (net of accumulated depreciation)	6,093,133	6,534,277
Residential Real Estate | Ohio
Real estate held for investment (net of accumulated depreciation)	10,000	10,000
Residential Real Estate | Tennessee
Real estate held for investment (net of accumulated depreciation)	105,260	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)	18,915,534	19,598,218
Residential Real Estate | Washington
Real estate held for investment (net of accumulated depreciation)	$ 476,181	$ 476,181