3) Investments: Commercial Real Estate Investment (Details)	Sep. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 150,568,998	$ 145,165,921
Commercial Real Estate 1
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 81,099,778	$ 68,973,936
Square Footage	723,477	739,747
Commercial Real Estate 1 | ArizonaMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 4,000	$ 450,538
Square Footage		16,270
Commercial Real Estate 1 | ArkansasMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 97,219	$ 100,369
Square Footage	3,200	3,200
Commercial Real Estate 1 | KansasMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 11,993,029	$ 12,450,297
Square Footage	222,679	222,679
Commercial Real Estate 1 | LouisianaMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 499,573	$ 518,700
Square Footage	7,063	7,063
Commercial Real Estate 1 | MississippiMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 3,748,324	$ 3,818,985
Square Footage	33,821	33,821
Commercial Real Estate 1 | NewMexicoMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 7,000	$ 7,000
Commercial Real Estate 1 | TexasMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 3,728,960	$ 3,734,974
Square Footage	23,470	23,470
Commercial Real Estate 1 | UtahMember
Real estate held for investment (net of accumulated depreciation of $17,919,427 and $16,138,439 for 2017 and 2016)	$ 61,021,673	$ 47,893,073
Square Footage	433,244	433,244