3) Investments: Commercial Real Estate Investment (Details)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 124,578,839	$ 141,298,706
Commercial Real Estate 1
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 93,467,392	$ 72,968,789
Square Footage	765,692	723,477
Commercial Real Estate 1 \| Arizona
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 4,000	$ 4,000
Commercial Real Estate 1 \| Arkansas
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)		$ 96,169
Square Footage		3,200
Commercial Real Estate 1 \| Kansas
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 7,225,273	$ 7,200,000
Square Footage	222,679	222,679
Commercial Real Estate 1 \| Louisiana
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 480,445	$ 493,197
Square Footage	7,063	7,063
Commercial Real Estate 1 \| Mississippi
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 3,678,509	$ 3,725,039
Square Footage	33,821	33,821
Commercial Real Estate 1 \| New Mexico
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 7,000	$ 7,000
Commercial Real Estate 1 \| Texas
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	335,000	$ 335,000
Square Footage		23,470
Commercial Real Estate 1 \| Utah
Real estate held for investment (net of accumulated depreciation of $16,240,453 and $18,788,869 for 2018 and 2017)	$ 81,737,165	$ 61,108,384
Square Footage	502,129	433,244