2) Investments: Real Estate Investment (Details)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 141,298,706	$ 145,165,921
Commercial Real Estate 1
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 72,968,789	$ 68,973,936
Square Footage	723,477	739,747
Commercial Real Estate 1 | Arizona
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 4,000	$ 450,538
Square Footage		16,270
Commercial Real Estate 1 | Arkansas
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 96,169	$ 100,369
Square Footage	3,200	3,200
Commercial Real Estate 1 | Kansas
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 7,200,000	$ 12,450,297
Square Footage	222,679	222,679
Commercial Real Estate 1 | Louisiana
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 493,197	$ 518,700
Square Footage	7,063	7,063
Commercial Real Estate 1 | Mississippi
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 3,725,039	$ 3,818,985
Square Footage	33,821	33,821
Commercial Real Estate 1 | New Mexico
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 7,000	$ 7,000
Commercial Real Estate 1 | Texas
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 335,000	$ 3,734,974
Square Footage	23,470	23,470
Commercial Real Estate 1 | Utah
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 61,108,384	$ 47,893,073
Square Footage	433,244	433,244
Residential Real Estate 1
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 68,329,917	$ 76,191,985
Residential Real Estate 1 | Arizona
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	217,105	742,259
Residential Real Estate 1 | Texas
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	509,011	1,091,188
Residential Real Estate 1 | Utah
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	54,113,272	59,485,466
Residential Real Estate 1 | California
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	5,463,878	5,848,389
Residential Real Estate 1 | Colorado
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)		364,489
Residential Real Estate 1 | Florida
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	7,000,684	8,327,355
Residential Real Estate 1 | Hawaii
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	712,286
Residential Real Estate 1 | Ohio
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	10,000
Residential Real Estate 1 | Oklahoma
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	17,500	46,658
Residential Real Estate 1 | Washington
Real estate held for investment (net of accumulated depreciation of $18,788,869 and $16,138,439 for 2017 and 2016)	$ 286,181	$ 286,181